# 5K Races in Castro Valley, CA (2026)

> 4 upcoming 5K races in Castro Valley, California.

- **Page:** https://runthis.run/races/california/castro-valley/5k

## Races

- **[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
- **[Brazen New Year's Eve](https://runthis.run/event/rs-211478-brazen-new-years-eve)** — Thu, Dec 31, 2026 · 6:00 PM CST · Castro Valley, CA · 5K / 10K / Marathon
- **[Brazen New Year's Day](https://runthis.run/event/rs-55369-brazen-new-years-day)** — Thu, Dec 31, 2026 · 6:00 PM CST · Castro Valley, CA · 5K / 10K / Marathon
- **[2027 Lake Chabot Trail Challenge (Half Marathon & 5K)](https://runthis.run/event/rs-21928-2027-lake-chabot-trail-challenge-half-marathon-5k)** — Sat, Jun 5, 2027 · 7:00 PM CDT · Castro Valley, CA · Marathon / 5K

## Nearby

- [All races in Castro Valley, CA](https://runthis.run/races/california/castro-valley.md)
- [5K races in California](https://runthis.run/races/california/5k.md)

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Source: [https://runthis.run/races/california/castro-valley/5k](https://runthis.run/races/california/castro-valley/5k) — data from Run This (runthis.run).