2021 - Lake Chabot Trail Challenge (Half Marathon & 5K)
2021 distances
Running
Half Marathon
On-line registration closes on 6/6/2020 at 11:59pm.
5K Run
On-line registration closes on 6/6/2020 at 11:59pm.
10K Run
On-line registration closes on 6/6/2020 at 11:59pm.
Race date Weather
Conditions on June 4, 2021 — historical Open-Meteo data.
About Castro Valley
Lake Chabot Trail Challenge (Half Marathon & 5K) takes place in Castro Valley, California, United States. The local timezone is America/Los_Angeles.
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🏃 Plan Your Next Race in Castro Valley
Find upcoming events by distance:
- Castro Valley 5K Races Best Castro Valley routes for beginners and speed work.
- 10K Run Events in Castro Valley The most popular local distance in California.
- Castro Valley Half Marathons Top-rated 21.1K courses in the Castro Valley area.
- Marathons in Castro Valley Scenic 42.2K routes and Castro Valley Boston qualifiers.
- Castro Valley Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.