# Half Marathon Races in Seattle, WA (2026)

> 32 upcoming Half Marathon races in Seattle, Washington.

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

## Races

- **[Sloth Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-198482-sloth-run-5k-10k-13-1-seattle)** — Sat, Aug 29, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Run for Breast Cancer 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-199889-run-for-breast-cancer-5k-10k-13-1-seattle)** — Sat, Aug 29, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[National Chocolate Day: Run for Chocolates 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-198817-national-chocolate-day-run-for-chocolates-5k-10k-13-1-seattl)** — Sat, Sep 12, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Run for Mental Health 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-199934-run-for-mental-health-5k-10k-13-1-seattle)** — Sat, Sep 12, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[The Brooks Orca Half Marathon presented by REI](https://runthis.run/event/rs-33861-the-brooks-orca-half-marathon-presented-by-rei)** — Sat, Sep 19, 2026 · 12:00 AM UTC · Seattle, WA · Marathon / 8.0 mi
- **[Oktoberfest Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-199698-oktoberfest-run-5k-10k-13-1-seattle)** — Sat, Sep 26, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Run for Donuts 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-200205-run-for-donuts-5k-10k-13-1-seattle)** — Sat, Sep 26, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Cookie Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-201404-cookie-run-5k-10k-13-1-seattle)** — Sat, Oct 10, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lovers Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-201536-coffee-lovers-run-5k-10k-13-1-seattle)** — Sat, Oct 10, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[PB&J Fuel Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-201649-pb-j-fuel-run-5k-10k-13-1-seattle)** — Sat, Oct 31, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-204705-halloween-trick-or-trot-run-5k-10k-13-1-seattle)** — Sat, Oct 31, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Run for Mental Health 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-201442-run-for-mental-health-5k-10k-13-1-seattle)** — Sat, Nov 14, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Veterans Day Freedom Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-205138-veterans-day-freedom-run-5k-10k-13-1-seattle)** — Sat, Nov 14, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[2026 Seattle Ghost Marathon, Half & 50K](https://runthis.run/event/rs-196229-2026-seattle-ghost-marathon-half-50k)** — Sat, Nov 28, 2026 · 12:00 AM UTC · Seattle, WA · Marathon / 31.1 mi
- **[Coffee Lovers Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-201481-coffee-lovers-run-5k-10k-13-1-seattle)** — Sat, Nov 28, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Thanksgiving Gobble Trot Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-205291-thanksgiving-gobble-trot-run-5k-10k-13-1-seattle)** — Sat, Nov 28, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Run for Breast Cancer 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-204864-run-for-breast-cancer-5k-10k-13-1-seattle)** — Sat, Dec 12, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Sunrise Marathon 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-207991-sunrise-marathon-5k-10k-13-1-seattle)** — Sat, Dec 12, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[A Merry Christmas Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-205024-a-merry-christmas-run-5k-10k-13-1-seattle)** — Sat, Dec 26, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[New Year's Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-208025-new-years-run-5k-10k-13-1-seattle)** — Sat, Dec 26, 2026 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[MLK Jr. Freedom Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-209368-mlk-jr-freedom-run-5k-10k-13-1-seattle)** — Sat, Jan 16, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Sunrise Marathon 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-210577-sunrise-marathon-5k-10k-13-1-seattle)** — Sat, Jan 16, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lover Run SEATTLE](https://runthis.run/event/rs-209515-coffee-lover-run-seattle)** — Sat, Jan 30, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Run for Donut SEATTLE](https://runthis.run/event/rs-210609-run-for-donut-seattle)** — Sat, Jan 30, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Valentine's Day Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-210078-valentines-day-run-5k-10k-13-1-seattle)** — Sat, Feb 13, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Run for Chocolate 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-210833-run-for-chocolate-5k-10k-13-1-seattle)** — Sat, Feb 13, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Run Together Against Breast Cancer SEATTLE](https://runthis.run/event/rs-212684-run-together-against-breast-cancer-seattle)** — Sat, Feb 27, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Sunrise Marathon 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-211570-sunrise-marathon-5k-10k-13-1-seattle)** — Sat, Mar 20, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[St. Paddy's Day Lucky Run 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-212776-st-paddys-day-lucky-run-5k-10k-13-1-seattle)** — Sat, Mar 20, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Always Hope Easter Run SEATTLE](https://runthis.run/event/rs-212968-always-hope-easter-run-seattle)** — Sat, Mar 27, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Run for Bagels 5K/10K/13.1 SEATTLE](https://runthis.run/event/rs-211434-run-for-bagels-5k-10k-13-1-seattle)** — Sat, Apr 10, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile
- **[Coffee Lover Run SEATTLE](https://runthis.run/event/rs-211466-coffee-lover-run-seattle)** — Sat, Apr 24, 2027 · 12:00 AM UTC · Seattle, WA · 5K / 10K / Marathon / 1 mile

## Nearby

- [All races in Seattle, WA](https://runthis.run/races/washington/seattle.md)
- [Half Marathon races in Washington](https://runthis.run/races/washington/half-marathon.md)

---

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