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    Race calendar

    5K Races in Castro Valley, CA

    4 upcoming 5K races in Castro Valley. Run This events are listed first.

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    DistanceAll5K10KHalf MarathonMarathonUltra
    Nearby citiesSan DiegoLong BeachLos AngelesSacramentoSan FranciscoBakersfieldCoronadoFresnoHuntington BeachSan JoseCanoga ParkVentura

    4 races

    Sat, Nov 7, 2026

    Lake Chabot Trail Run

    Castro Valley, CA

    Outside4.8 miMarathon18.6 mi31.1 mi

    Fri, Jan 1, 2027

    Brazen New Year's Eve

    Castro Valley, CA

    Outside5K10KMarathon

    Fri, Jan 1, 2027

    Brazen New Year's Day

    Castro Valley, CA

    Outside5K10KMarathon

    Sun, Jun 6, 2027

    2027 Lake Chabot Trail Challenge (Half Marathon & 5K)

    Castro Valley, CA

    OutsideMarathon5K

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