# Half Marathon Races in California (2026)

> 297 upcoming Half Marathon races across California.

- **Page:** https://runthis.run/races/california/half-marathon

## Races

- **[Hell Of A Half Marathon & 2 Person Relay](https://runthis.run/event/rs-26579-hell-of-a-half-marathon-2-person-relay)** — Fri, Aug 7, 2026 · 7:00 PM CDT · Exeter, CA · Marathon
- **[Noyo Headlands Race](https://runthis.run/event/rs-60951-noyo-headlands-race)** — Fri, Aug 7, 2026 · 7:00 PM CDT · Fort Bragg, CA · Marathon / 10K / 5K / 805 m
- **[Bear Creek](https://runthis.run/event/rs-64591-bear-creek)** — Fri, Aug 7, 2026 · 7:00 PM CDT · Orinda, CA · 13.3 mi / 6.3 mi / 5K
- **[Howl at the Moon – 5K, 10K, 10M, and Half Marathon](https://runthis.run/event/rs-145926-howl-at-the-moon-5k-10k-10m-and-half-marathon)** — Sat, Aug 8, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / 9.3 mi / Marathon
- **[SAR Wild Run](https://runthis.run/event/rs-15940-sar-wild-run)** — Sat, Aug 8, 2026 · 7:00 PM CDT · Shaver Lake, CA · Marathon / 10K / 5K / 2.0 mi
- **[Sundae Funday - Ice Cream Run 5K, 10K, and Half Marathon by Califlow Runs](https://runthis.run/event/rs-184331-sundae-funday-ice-cream-run-5k-10k-and-half-marathon-by-cali)** — Sat, Aug 8, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon / 1000 m
- **[Strides in Recovery Community Event](https://runthis.run/event/rs-209369-strides-in-recovery-community-event)** — Sat, Aug 8, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / 10.0 mi / Marathon
- **[Redwood (Summer) Trail Run](https://runthis.run/event/rs-114709-redwood-summer-trail-run)** — Fri, Aug 14, 2026 · 7:00 PM CDT · Oakland, CA · 5.0 mi / Marathon / 18.6 mi / 31.1 mi / 2.0 mi
- **[Beer City Half™ SLAM](https://runthis.run/event/rs-155022-beer-city-half-slam)** — Fri, Aug 14, 2026 · 7:00 PM CDT · Fremont, CA · Marathon / 10K / 5K
- **[Bagel Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198432-bagel-run-5k-10k-13-1-los-angeles)** — Fri, Aug 14, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Run for PB& J 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198702-run-for-pb-j-5k-10k-13-1-los-angeles)** — Fri, Aug 14, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Run for PB& J 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-198880-run-for-pb-j-5k-10k-13-1-sacramento)** — Fri, Aug 14, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Run for PB& J 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-198882-run-for-pb-j-5k-10k-13-1-san-diego)** — Fri, Aug 14, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Run for PB& J 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-198884-run-for-pb-j-5k-10k-13-1-san-francisco)** — Fri, Aug 14, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Bagel Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-199403-bagel-run-5k-10k-13-1-sacramento)** — Fri, Aug 14, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Bagel Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-199405-bagel-run-5k-10k-13-1-san-diego)** — Fri, Aug 14, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Bagel Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-199408-bagel-run-5k-10k-13-1-san-francisco)** — Fri, Aug 14, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Santa Cruz Trail Run](https://runthis.run/event/rs-134799-santa-cruz-trail-run)** — Fri, Aug 21, 2026 · 7:00 PM CDT · Felton, CA · 18.2 mi / Marathon / 10K
- **[Double Dipsea](https://runthis.run/event/rs-63035-double-dipsea)** — Fri, Aug 21, 2026 · 7:00 PM CDT · Stinson Beach, CA · 13.7 mi
- **[One Love Run – 5K, 10K, 10M, and Half Marathon](https://runthis.run/event/rs-141618-one-love-run-5k-10k-10m-and-half-marathon)** — Sat, Aug 22, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / 10.0 mi / Marathon
- **[Californian Dreamin 5K, 10K, & Half Marathon by Califlow Runs](https://runthis.run/event/rs-176750-californian-dreamin-5k-10k-half-marathon-by-califlow-runs)** — Sat, Aug 22, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon
- **[SPASM Crystal Springs Trail Run](https://runthis.run/event/rs-112949-spasm-crystal-springs-trail-run)** — Fri, Aug 28, 2026 · 7:00 PM CDT · Woodside, CA · 10K / Marathon / 22.0 mi / 30.9 mi / 2.0 mi
- **[Sloth Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-197992-sloth-run-5k-10k-13-1-los-angeles)** — Fri, Aug 28, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Sloth Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-198476-sloth-run-5k-10k-13-1-sacramento)** — Fri, Aug 28, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Sloth Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-198479-sloth-run-5k-10k-13-1-san-diego)** — Fri, Aug 28, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Sloth Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-198481-sloth-run-5k-10k-13-1-san-francisco)** — Fri, Aug 28, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Breast Cancer 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-199875-run-for-breast-cancer-5k-10k-13-1-los-angeles)** — Fri, Aug 28, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Breast Cancer 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-199885-run-for-breast-cancer-5k-10k-13-1-sacramento)** — Fri, Aug 28, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Breast Cancer 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-199887-run-for-breast-cancer-5k-10k-13-1-san-diego)** — Fri, Aug 28, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Breast Cancer 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-199888-run-for-breast-cancer-5k-10k-13-1-san-francisco)** — Fri, Aug 28, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Night of the Running Dead 5K, 10K, 1 Miler, Half Marathon SummerWeen Series by Califlow Runs](https://runthis.run/event/rs-204275-night-of-the-running-dead-5k-10k-1-miler-half-marathon-summe)** — Fri, Aug 28, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon / 1 mile
- **[Diablo Trail Run](https://runthis.run/event/rs-114766-diablo-trail-run)** — Sat, Sep 5, 2026 · 7:00 PM CDT · Clayton, CA · 4.0 mi / 10.0 mi / Marathon / 30.4 mi / 2.0 mi
- **[FIESTA HALF MARATHON, 10K & MILE RUN - FRESNO](https://runthis.run/event/rs-142132-fiesta-half-marathon-10k-mile-run-fresno)** — Sat, Sep 5, 2026 · 7:00 PM CDT · Fresno, CA · 10K / 1 mile / 2.0 mi / 400 m / Marathon
- **[Pirates Plunder – 5K, 10K, 10-miler, and Half Marathon](https://runthis.run/event/rs-146636-pirates-plunder-5k-10k-10-miler-and-half-marathon)** — Sat, Sep 5, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / 10.0 mi / Marathon
- **[Vibha Bay Area Dream Mile 2026](https://runthis.run/event/rs-161128-vibha-bay-area-dream-mile-2026)** — Sat, Sep 5, 2026 · 7:00 PM CDT · Sunnyvale, CA · Marathon / 10K / 5K / 200 m / 100 m
- **[Mammoth Bar Trail Runs](https://runthis.run/event/rs-178676-mammoth-bar-trail-runs)** — Sat, Sep 5, 2026 · 7:00 PM CDT · Auburn, CA · Marathon / 10K
- **[The Running Fence Run: A Run of Freedom- Celebrating Christo's 1976 "Running Fence” art project](https://runthis.run/event/rs-172182-the-running-fence-run-a-run-of-freedom-celebrating-christos-)** — Fri, Sep 11, 2026 · 7:00 PM CDT · Bloomfield, CA · Marathon / 10K / 5K
- **[Beer City Half™ Bishop Ranch](https://runthis.run/event/rs-183998-beer-city-half-bishop-ranch)** — Fri, Sep 11, 2026 · 7:00 PM CDT · San Ramon, CA · Marathon / 10K / 5K / 1 mile
- **[National Chocolate Day: Run for Chocolates 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-197993-national-chocolate-day-run-for-chocolates-5k-10k-13-1-los-an)** — Fri, Sep 11, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Mental Health 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198429-run-for-mental-health-5k-10k-13-1-los-angeles)** — Fri, Sep 11, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[National Chocolate Day: Run for Chocolates 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-198812-national-chocolate-day-run-for-chocolates-5k-10k-13-1-sacram)** — Fri, Sep 11, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[National Chocolate Day: Run for Chocolates 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-198814-national-chocolate-day-run-for-chocolates-5k-10k-13-1-san-di)** — Fri, Sep 11, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[National Chocolate Day: Run for Chocolates 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-198816-national-chocolate-day-run-for-chocolates-5k-10k-13-1-san-fr)** — Fri, Sep 11, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Mental Health 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-199930-run-for-mental-health-5k-10k-13-1-sacramento)** — Fri, Sep 11, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Mental Health 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-199932-run-for-mental-health-5k-10k-13-1-san-diego)** — Fri, Sep 11, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Mental Health 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-199933-run-for-mental-health-5k-10k-13-1-san-francisco)** — Fri, Sep 11, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[The Honey Badger Half (& 10K/5K)](https://runthis.run/event/rs-110957-the-honey-badger-half-10k-5k)** — Sat, Sep 12, 2026 · 7:00 PM CDT · Santa Venetia, CA · 5K / 10K / Marathon
- **[Seasonal Confusion 5K. 10K. Half Marathon by Califlow Runs](https://runthis.run/event/rs-199907-seasonal-confusion-5k-10k-half-marathon-by-califlow-runs)** — Sat, Sep 12, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon
- **[Jurassic Jaunt – 5K, 10K, 10M, and Half Marathon](https://runthis.run/event/rs-140373-jurassic-jaunt-5k-10k-10m-and-half-marathon)** — Fri, Sep 18, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon
- **[Bayside Saved by the Bell 5K, 10K & Half Marathon](https://runthis.run/event/rs-184972-bayside-saved-by-the-bell-5k-10k-half-marathon)** — Fri, Sep 18, 2026 · 7:00 PM CDT · Canoga Park, CA · 5K / 10K / Marathon
- **[Season of the Witch 5K 10K Half Marathon by Califlow Runs](https://runthis.run/event/rs-201216-season-of-the-witch-5k-10k-half-marathon-by-califlow-runs)** — Fri, Sep 18, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon
- **[Run for Coffee 5k / 10k / 13.1 - Roseville](https://runthis.run/event/rs-205588-run-for-coffee-5k-10k-13-1-roseville)** — Fri, Sep 18, 2026 · 7:00 PM CDT · Rocklin, CA · 5K / 10K / Marathon
- **[Rocky Ridge](https://runthis.run/event/rs-67179-rocky-ridge)** — Fri, Sep 18, 2026 · 7:00 PM CDT · san Ramon, CA · 5K / 10K / 13.7 mi
- **[Alameda Island Running Festival](https://runthis.run/event/rs-126381-alameda-island-running-festival)** — Sat, Sep 19, 2026 · 7:00 PM CDT · Alameda, CA · Marathon / 10K / 5K / 1 mile
- **[La Noche de las Brujas Run -SummerWeen Series 5K 10K Half by Califlow Runs](https://runthis.run/event/rs-204276-la-noche-de-las-brujas-run-summerween-series-5k-10k-half-by-)** — Sat, Sep 19, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon / 1 mile
- **[PJRC Virtual 5K](https://runthis.run/event/rs-212227-pjrc-virtual-5k)** — Wed, Sep 23, 2026 · 7:00 PM CDT · Dana Point, CA · 5K / Marathon
- **[Oktoberfest Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198124-oktoberfest-run-5k-10k-13-1-los-angeles)** — Fri, Sep 25, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Donuts 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198430-run-for-donuts-5k-10k-13-1-los-angeles)** — Fri, Sep 25, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Oktoberfest Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-199691-oktoberfest-run-5k-10k-13-1-sacramento)** — Fri, Sep 25, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Oktoberfest Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-199694-oktoberfest-run-5k-10k-13-1-san-diego)** — Fri, Sep 25, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Oktoberfest Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-199696-oktoberfest-run-5k-10k-13-1-san-francisco)** — Fri, Sep 25, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Donuts 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-200199-run-for-donuts-5k-10k-13-1-sacramento)** — Fri, Sep 25, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Donuts 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-200201-run-for-donuts-5k-10k-13-1-san-diego)** — Fri, Sep 25, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Donuts 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-200204-run-for-donuts-5k-10k-13-1-san-francisco)** — Fri, Sep 25, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Auburn Half Marathon](https://runthis.run/event/rs-119937-auburn-half-marathon)** — Sat, Sep 26, 2026 · 7:00 PM CDT · Auburn, CA · 13.6 mi / 7.6 mi / 3.4 mi / Marathon
- **[The Retro Run – 5K, 10k, 10m, and Half Marathon](https://runthis.run/event/rs-146638-the-retro-run-5k-10k-10m-and-half-marathon)** — Sat, Sep 26, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / 10.0 mi / Marathon
- **[Take Me to Your Pizza : Alien Dash 5K. 10K. Half Marathon Sponsored by Domino's Pizza](https://runthis.run/event/rs-185250-take-me-to-your-pizza-alien-dash-5k-10k-half-marathon-sponso)** — Sat, Sep 26, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon / 1 mile
- **[SGRAIL Marin - Triathlon & Trail Half Marathon](https://runthis.run/event/rs-109870-sgrail-marin-triathlon-trail-half-marathon)** — Thu, Oct 1, 2026 · 7:00 PM CDT · San Rafael, CA · 32.0 mi / Marathon / 45.1 mi
- **[Mean Girls 5K, 10K & Half Marathon](https://runthis.run/event/rs-196076-mean-girls-5k-10k-half-marathon)** — Fri, Oct 2, 2026 · 7:00 PM CDT · Canoga Park, CA · 5K / 10K / Marathon
- **[Peace Officer Memorial Run](https://runthis.run/event/rs-108240-peace-officer-memorial-run)** — Sat, Oct 3, 2026 · 7:00 PM CDT · Modesto, CA · Marathon / 5K / 1000 m
- **[Redding Breakfast Lions Turtle Bay Run 2026](https://runthis.run/event/rs-142174-redding-breakfast-lions-turtle-bay-run-2026)** — Sat, Oct 3, 2026 · 7:00 PM CDT · Redding, CA · Marathon / 10K / 2.0 mi
- **[Hallo-Thanks-Mas Dash – 5K, 10K, and Half Marathon](https://runthis.run/event/rs-146641-hallo-thanks-mas-dash-5k-10k-and-half-marathon)** — Sat, Oct 3, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon
- **[Never Say Die Run 5K. 10K. Half Marathon An 80s Adventure Movie Inspired Race](https://runthis.run/event/rs-202418-never-say-die-run-5k-10k-half-marathon-an-80s-adventure-movi)** — Sat, Oct 3, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon
- **[Napa Half Marathon](https://runthis.run/event/rs-20558-napa-half-marathon)** — Sat, Oct 3, 2026 · 7:00 PM CDT · Napa, CA · Marathon / 6.5 mi
- **[Judgment Day Half Marathon, 10K & 5K Run/Walk](https://runthis.run/event/rs-27824-judgment-day-half-marathon-10k-5k-run-walk)** — Sat, Oct 3, 2026 · 7:00 PM CDT · Bakersfield, CA · Marathon / 10K / 5K
- **[Bagel Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198123-bagel-run-5k-10k-13-1-los-angeles)** — Fri, Oct 9, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lovers Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198431-coffee-lovers-run-5k-10k-13-1-los-angeles)** — Fri, Oct 9, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Bagel Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-201400-bagel-run-5k-10k-13-1-sacramento)** — Fri, Oct 9, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Bagel Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-201402-bagel-run-5k-10k-13-1-san-diego)** — Fri, Oct 9, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Bagel Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-201403-bagel-run-5k-10k-13-1-san-francisco)** — Fri, Oct 9, 2026 · 7:00 PM CDT · San Mateo, CA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lovers Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-201531-coffee-lovers-run-5k-10k-13-1-sacramento)** — Fri, Oct 9, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lovers Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-201533-coffee-lovers-run-5k-10k-13-1-san-diego)** — Fri, Oct 9, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lovers Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-201535-coffee-lovers-run-5k-10k-13-1-san-francisco)** — Fri, Oct 9, 2026 · 7:00 PM CDT · San Mateo, CA · 5K / 10K / Marathon / 1 mile
- **[2026 Humboldt Redwoods Marathon, Half Marathon, 5K](https://runthis.run/event/rs-109736-2026-humboldt-redwoods-marathon-half-marathon-5k)** — Sat, Oct 10, 2026 · 7:00 PM CDT · Weott, CA · Marathon / 5K
- **[Bizz Johnson](https://runthis.run/event/rs-112840-bizz-johnson)** — Sat, Oct 10, 2026 · 7:00 PM CDT · Susanville, CA · 31.1 mi / Marathon / 10K
- **[Champion Mine Trail Race](https://runthis.run/event/rs-185660-champion-mine-trail-race)** — Sat, Oct 10, 2026 · 7:00 PM CDT · Nevada City, CA · Marathon / 10K / 5K
- **[Night of the Living Runners – 5K, 10K, 10-Miler, Half Marathon](https://runthis.run/event/rs-146640-night-of-the-living-runners-5k-10k-10-miler-half-marathon)** — Fri, Oct 16, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / 10.0 mi / Marathon
- **[Back to the Future: 88 MPH Dash 5K, 10K & Half](https://runthis.run/event/rs-184990-back-to-the-future-88-mph-dash-5k-10k-half)** — Fri, Oct 16, 2026 · 7:00 PM CDT · Canoga Park, CA · 5K / 10K / Marathon
- **[SPACEROCK Trail Race](https://runthis.run/event/rs-37157-spacerock-trail-race)** — Fri, Oct 16, 2026 · 7:00 PM CDT · Aqua Dulce, CA · 13.9 mi / 8.9 mi / 10K / 5K
- **[Heart of Cool Trail Run](https://runthis.run/event/rs-64486-heart-of-cool-trail-run)** — Fri, Oct 16, 2026 · 7:00 PM CDT · Cool, CA · 5K / 10K / Marathon
- **[Fleet Feet Fall Classic - Trail October 18th, 2026](https://runthis.run/event/rs-152566-fleet-feet-fall-classic-trail-october-18th-2026)** — Sat, Oct 17, 2026 · 7:00 PM CDT · Chico, CA · Marathon / 4.0 mi
- **[Witches Wave - Halloween Run 5K, 10K, and Half Marathon by Califlow Runs](https://runthis.run/event/rs-180044-witches-wave-halloween-run-5k-10k-and-half-marathon-by-calif)** — Sat, Oct 17, 2026 · 7:00 PM CDT · Huntington Beach, CA · 5K / 10K / Marathon
- **[2026 - City to the Sea Half Marathon & 5K](https://runthis.run/event/rs-206950-2026-city-to-the-sea-half-marathon-5k)** — Sat, Oct 17, 2026 · 7:00 PM CDT · San Luis Obispo, CA · Marathon / 5K
- **[MISSION INN RUN](https://runthis.run/event/rs-91971-mission-inn-run)** — Sat, Oct 17, 2026 · 7:00 PM CDT · Riverside, CA · 5K / 10K / Marathon / 500 m
- **[Malibu Moves: Half Marathon, 10K, 5K, 1-Mi & 1K](https://runthis.run/event/rs-159614-malibu-moves-half-marathon-10k-5k-1-mi-1k)** — Fri, Oct 23, 2026 · 7:00 PM CDT · Malibu, CA · Marathon / 10K / 5K / 1000 m / 5.0 mi
- **[DIA DE LOS MUERTOS HALF MARATHON & 5K RUN/WALK (BAKERSFIELD)](https://runthis.run/event/rs-164562-dia-de-los-muertos-half-marathon-5k-run-walk-bakersfield)** — Fri, Oct 23, 2026 · 7:00 PM CDT · Bakersfield, CA · Marathon / 5K / 2.0 mi
- **[RunThrough USA Long Beach 5k,10k & Half Marathon Race](https://runthis.run/event/rs-188227-runthrough-usa-long-beach-5k-10k-half-marathon-race)** — Fri, Oct 23, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon
- **[Trick or Trot 5K, 10K, and Half Marathon by Califlow Runs](https://runthis.run/event/rs-170238-trick-or-trot-5k-10k-and-half-marathon-by-califlow-runs)** — Sat, Oct 24, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon
- **[Spooky Shuffle – 5k, 10k, Half Marathon](https://runthis.run/event/rs-206935-spooky-shuffle-5k-10k-half-marathon)** — Sat, Oct 24, 2026 · 7:00 PM CDT · Van Nuys, CA · 5K / 10K / Marathon
- **[ZombieRunner Halloween](https://runthis.run/event/rs-116994-zombierunner-halloween)** — Fri, Oct 30, 2026 · 7:00 PM CDT · San Jose, CA · 5K / 10K / Marathon / 45 m / 2.0 mi
- **[PB&J Fuel Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198446-pb-j-fuel-run-5k-10k-13-1-los-angeles)** — Fri, Oct 30, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow Runs](https://runthis.run/event/rs-199908-the-long-beach-halloween-run-5k-10k-half-marathon-by-califlo)** — Fri, Oct 30, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / Marathon
- **[PB&J Fuel Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-201644-pb-j-fuel-run-5k-10k-13-1-sacramento)** — Fri, Oct 30, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[PB&J Fuel Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-201647-pb-j-fuel-run-5k-10k-13-1-san-diego)** — Fri, Oct 30, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[PB&J Fuel Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-201648-pb-j-fuel-run-5k-10k-13-1-san-francisco)** — Fri, Oct 30, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Halloween Trick or Trot Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-204683-halloween-trick-or-trot-run-5k-10k-13-1-los-angeles)** — Fri, Oct 30, 2026 · 7:00 PM CDT · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Halloween Trick or Trot Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-204700-halloween-trick-or-trot-run-5k-10k-13-1-sacramento)** — Fri, Oct 30, 2026 · 7:00 PM CDT · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Halloween Trick or Trot Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-204703-halloween-trick-or-trot-run-5k-10k-13-1-san-diego)** — Fri, Oct 30, 2026 · 7:00 PM CDT · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Halloween Trick or Trot Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-204704-halloween-trick-or-trot-run-5k-10k-13-1-san-francisco)** — Fri, Oct 30, 2026 · 7:00 PM CDT · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Día de Muertos - Viva la Vida - 5K, 10K, and Half Marathon by Califlow Runs](https://runthis.run/event/rs-170239-d-a-de-muertos-viva-la-vida-5k-10k-and-half-marathon-by-cali)** — Sat, Oct 31, 2026 · 7:00 PM CDT · Long beach, CA · 5K / 10K / Marathon / 1 mile
- **[Halloween Leftovers – 5K, 10K, 10-Miler, Half Marathon](https://runthis.run/event/rs-210811-halloween-leftovers-5k-10k-10-miler-half-marathon)** — Sat, Oct 31, 2026 · 7:00 PM CDT · Long Beach, CA · 5K / 10K / 10.0 mi / Marathon
- **[Two Cities Marathon](https://runthis.run/event/rs-27723-two-cities-marathon)** — Sat, Oct 31, 2026 · 7:00 PM CDT · Fresno, CA · Marathon / 10K / 5K
- **[Clarksburg Country Run](https://runthis.run/event/rs-37243-clarksburg-country-run)** — Sat, Oct 31, 2026 · 7:00 PM CDT · Clarksburg, CA · 18.6 mi / Marathon / 10K / 5K / 805 m / 1 mile
- **[Lake Chabot Trail Run](https://runthis.run/event/rs-116864-lake-chabot-trail-run)** — Fri, Nov 6, 2026 · 6:00 PM CST · Castro Valley, CA · 4.8 mi / Marathon / 18.6 mi / 31.1 mi / 45 m / 5K / 2.0 mi
- **[Beer City Half™ OC](https://runthis.run/event/rs-164821-beer-city-half-oc)** — Fri, Nov 6, 2026 · 6:00 PM CST · Santa Ana, CA · Marathon / 10K / 5K / 1 mile
- **[RunThrough San Francisco at Crissy Field 5k, 100k & Half Marathon](https://runthis.run/event/rs-209258-runthrough-san-francisco-at-crissy-field-5k-100k-half-marath)** — Fri, Nov 6, 2026 · 6:00 PM CST · San Francisco, CA · 5K / 10K / Marathon
- **[Donut Runners Rejoice – 5K, 10K, 10-Miler, Half Marathon](https://runthis.run/event/rs-140374-donut-runners-rejoice-5k-10k-10-miler-half-marathon)** — Sat, Nov 7, 2026 · 6:00 PM CST · Long Beach, CA · 5K / 10K / 10.0 mi / Marathon
- **[Temecula Half Marathon, 10K, 5K](https://runthis.run/event/rs-161438-temecula-half-marathon-10k-5k)** — Sat, Nov 7, 2026 · 6:00 PM CST · Temecula, CA · Marathon / 10K / 5K
- **[2026 Silver Strand Veterans Day Half Marathon, 10 Miler, 12K & 5K - San Diego](https://runthis.run/event/rs-194221-2026-silver-strand-veterans-day-half-marathon-10-miler-12k-5)** — Sat, Nov 7, 2026 · 6:00 PM CST · Coronado, CA · Marathon / 10.0 mi / 7.5 mi / 5K
- **[Friday the 13th Night Race -Deranged Turkey Trot: 5K. 10K. Half Marathon by Califlow Runs](https://runthis.run/event/rs-194454-friday-the-13th-night-race-deranged-turkey-trot-5k-10k-half-)** — Thu, Nov 12, 2026 · 6:00 PM CST · Long Beach, CA · 5K / 10K / Marathon
- **[ZombieRunner Quarry Lakes](https://runthis.run/event/rs-116891-zombierunner-quarry-lakes)** — Fri, Nov 13, 2026 · 6:00 PM CST · Fremont, CA · 5K / 10K / Marathon / 2.0 mi
- **[Thrive San Diego Half Marathon & 5K](https://runthis.run/event/rs-138666-thrive-san-diego-half-marathon-5k)** — Fri, Nov 13, 2026 · 6:00 PM CST · San Diego, CA · Marathon / 5K
- **[Huffin for the Stuffin- Turkey Trot 5K, 10K, & Half Marathon](https://runthis.run/event/rs-169309-huffin-for-the-stuffin-turkey-trot-5k-10k-half-marathon)** — Fri, Nov 13, 2026 · 6:00 PM CST · Long Beach, CA · 5K / 10K / Marathon
- **[Run for Mental Health 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198112-run-for-mental-health-5k-10k-13-1-los-angeles)** — Fri, Nov 13, 2026 · 6:00 PM CST · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Mental Health 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-201436-run-for-mental-health-5k-10k-13-1-sacramento)** — Fri, Nov 13, 2026 · 6:00 PM CST · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Mental Health 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-201438-run-for-mental-health-5k-10k-13-1-san-diego)** — Fri, Nov 13, 2026 · 6:00 PM CST · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Run for Mental Health 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-201439-run-for-mental-health-5k-10k-13-1-san-francisco)** — Fri, Nov 13, 2026 · 6:00 PM CST · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[Veterans Day Freedom Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-204871-veterans-day-freedom-run-5k-10k-13-1-los-angeles)** — Fri, Nov 13, 2026 · 6:00 PM CST · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Move4Life's Half-Marathon](https://runthis.run/event/rs-205047-move4lifes-half-marathon)** — Fri, Nov 13, 2026 · 6:00 PM CST · Sacramento, CA · Marathon / 10K / 5K / 2.0 mi
- **[Veterans Day Freedom Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-205134-veterans-day-freedom-run-5k-10k-13-1-sacramento)** — Fri, Nov 13, 2026 · 6:00 PM CST · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Veterans Day Freedom Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-205136-veterans-day-freedom-run-5k-10k-13-1-san-diego)** — Fri, Nov 13, 2026 · 6:00 PM CST · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Veterans Day Freedom Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-205137-veterans-day-freedom-run-5k-10k-13-1-san-francisco)** — Fri, Nov 13, 2026 · 6:00 PM CST · San Francisco, CA · 5K / 10K / Marathon / 1 mile
- **[The Stuffing Shuffle – 5K, 10K, Half Marathon](https://runthis.run/event/rs-206934-the-stuffing-shuffle-5k-10k-half-marathon)** — Fri, Nov 13, 2026 · 6:00 PM CST · Fountain Valley, CA · 5K / 10K / Marathon
- **[Catalina Island Half-Marathon & 10K](https://runthis.run/event/rs-73814-catalina-island-half-marathon-10k)** — Fri, Nov 13, 2026 · 6:00 PM CST · Avalon, CA · Marathon / 10K / 1000 m
- **[Harvest Hustle – 5K, 10K, Half Marathon](https://runthis.run/event/rs-140264-harvest-hustle-5k-10k-half-marathon)** — Fri, Nov 20, 2026 · 6:00 PM CST · Lake View Terrace, CA · 5K / 10K / Marathon
- **[Davis Turkey Trot](https://runthis.run/event/rs-38695-davis-turkey-trot)** — Fri, Nov 20, 2026 · 6:00 PM CST · Davis, CA · 5K / 10K / Marathon / 2.0 mi / 1 mile
- **[Furgiving Run: Turkey Trot 5K, 10K, Half Marathon by Califlow Runs](https://runthis.run/event/rs-199913-furgiving-run-turkey-trot-5k-10k-half-marathon-by-califlow-r)** — Sat, Nov 21, 2026 · 6:00 PM CST · Long Beach, CA · 5K / 10K / 1 mile / Marathon
- **[Zoom Turkey Trot](https://runthis.run/event/rs-116880-zoom-turkey-trot)** — Wed, Nov 25, 2026 · 6:00 PM CST · San Jose, CA · 5K / 10K / Marathon / 2.0 mi
- **[The Giving Turkey Trot - 5K, 10K & Half Marathon](https://runthis.run/event/rs-205159-the-giving-turkey-trot-5k-10k-half-marathon)** — Wed, Nov 25, 2026 · 6:00 PM CST · Any City - Any State, CA · 5K / 10K / Marathon
- **[Mash + Dash – 5K, 10K, 10-Miler, Half Marathon](https://runthis.run/event/rs-146702-mash-dash-5k-10k-10-miler-half-marathon)** — Fri, Nov 27, 2026 · 6:00 PM CST · Long Beach, CA · 5K / 10K / 10.0 mi / Marathon
- **[Coffee Lovers Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-198114-coffee-lovers-run-5k-10k-13-1-los-angeles)** — Fri, Nov 27, 2026 · 6:00 PM CST · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lovers Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-201475-coffee-lovers-run-5k-10k-13-1-sacramento)** — Fri, Nov 27, 2026 · 6:00 PM CST · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lovers Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-201479-coffee-lovers-run-5k-10k-13-1-san-diego)** — Fri, Nov 27, 2026 · 6:00 PM CST · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lovers Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-201480-coffee-lovers-run-5k-10k-13-1-san-francisco)** — Fri, Nov 27, 2026 · 6:00 PM CST · San Mateo, CA · 5K / 10K / Marathon / 1 mile
- **[Thanksgiving Gobble Trot Run 5K/10K/13.1 LOS ANGELES](https://runthis.run/event/rs-204872-thanksgiving-gobble-trot-run-5k-10k-13-1-los-angeles)** — Fri, Nov 27, 2026 · 6:00 PM CST · Los Angeles, CA · 5K / 10K / Marathon / 1 mile
- **[Thanksgiving Gobble Trot Run 5K/10K/13.1 SACRAMENTO](https://runthis.run/event/rs-205287-thanksgiving-gobble-trot-run-5k-10k-13-1-sacramento)** — Fri, Nov 27, 2026 · 6:00 PM CST · Sacramento, CA · 5K / 10K / Marathon / 1 mile
- **[Thanksgiving Gobble Trot Run 5K/10K/13.1 SAN DIEGO](https://runthis.run/event/rs-205289-thanksgiving-gobble-trot-run-5k-10k-13-1-san-diego)** — Fri, Nov 27, 2026 · 6:00 PM CST · San Diego, CA · 5K / 10K / Marathon / 1 mile
- **[Thanksgiving Gobble Trot Run 5K/10K/13.1 SAN FRANCISCO](https://runthis.run/event/rs-205290-thanksgiving-gobble-trot-run-5k-10k-13-1-san-francisco)** — Fri, Nov 27, 2026 · 6:00 PM CST · San Mateo, CA · 5K / 10K / Marathon / 1 mile
- **[Quarry Turkey](https://runthis.run/event/rs-69293-quarry-turkey)** — Fri, Nov 27, 2026 · 6:00 PM CST · Fremont, CA · 5K / 10K / Marathon
- **[Jingle Bell Jog – 5K, 10K, 10-Miler, Half Marathon](https://runthis.run/event/rs-146704-jingle-bell-jog-5k-10k-10-miler-half-marathon)** — Sat, Dec 5, 2026 · 6:00 PM CST · Long Beach, CA · 5K / 10K / 10.0 mi / Marathon

_Showing the 150 soonest of 297 upcoming races. The full list is on [the page itself](https://runthis.run/races/california/half-marathon)._

## Half Marathon races by city

- [Long Beach, CA (55)](https://runthis.run/races/california/long-beach/half-marathon.md)
- [Los Angeles, CA (35)](https://runthis.run/races/california/los-angeles/half-marathon.md)
- [San Diego, CA (34)](https://runthis.run/races/california/san-diego/half-marathon.md)
- [Sacramento, CA (31)](https://runthis.run/races/california/sacramento/half-marathon.md)
- [San Francisco, CA (24)](https://runthis.run/races/california/san-francisco/half-marathon.md)
- [San Mateo, CA (6)](https://runthis.run/races/california/san-mateo/half-marathon.md)
- [Castro Valley, CA (5)](https://runthis.run/races/california/castro-valley/half-marathon.md)
- [Huntington Beach, CA (5)](https://runthis.run/races/california/huntington-beach/half-marathon.md)
- [Bakersfield, CA (4)](https://runthis.run/races/california/bakersfield/half-marathon.md)
- [Canoga Park, CA (4)](https://runthis.run/races/california/canoga-park/half-marathon.md)
- [Fremont, CA (4)](https://runthis.run/races/california/fremont/half-marathon.md)
- [Auburn, CA (3)](https://runthis.run/races/california/auburn/half-marathon.md)
- [Fort Bragg, CA (3)](https://runthis.run/races/california/fort-bragg/half-marathon.md)
- [San Jose, CA (3)](https://runthis.run/races/california/san-jose/half-marathon.md)

---

Source: [https://runthis.run/races/california/half-marathon](https://runthis.run/races/california/half-marathon) — data from Run This (runthis.run).