Chabot/Redtail Ridge Trail Run
Castro Valley, CA
50K, 35K, Half Marathon, 10K, 5K
Key dates
Registration opens
Apr 1, 2026
Registration closes
Mar 27, 2027
Race day
Mar 27, 2027
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Registration openings and major changes, like a new date or a cancellation.
Entry transfers
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Listed from Race Roster. Checked Nov 1, 2026.