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2027 Lake Chabot Trail Challenge (Half Marathon & 5K)
Open now- Date
- June 6, 2027
- Sport
- Trail running
- Location
- Castro Valley, CA
- Distances
- 5K · Half marathon
- Entry
- $40 – $70
- Registration opens
- August 1, 2026
- Registration closes
- June 6, 2027
Listing from runsignup. Always confirm details with the organiser.