Timed events and races in Castro Valley, California (CA), United States (US)

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Ultra

Dick Collins Firetrails
Sep 27, 2025

100k 50 Mile Marathon Ultra
Chabot/Redtail Ridge Trail Run
Feb 21, 2026

10k 30k 50k 5k Half Marathon Run Ultra
Lake Chabot Trail Run (Nov) [event website]
Nov 08, 2025

16k 30k 50k 72k Run