Trail Runs in Castro Valley, California 2026 — MyNextRace

There are 3 trail runs in Castro Valley, California in 2026. The next is the 2026 Lake Chabot Trail Challenge (Half Marathon & 5K) on June 7.

Sun, Jun 7 · Castro Valley, CA Castro Valley

Trail 5K RunHalf Marathon

From $40 Open

Fri, Jun 26 · Castro Valley, CA Castro Valley

Trail The Rock the Loch Half Marathon (LIVE)The Rock the Loch Half Marathon (VIRTUAL)The Rock the Loch 10K (LIVE) +3

From $30 Open Closing Soon

Sat, Nov 7 · Castro Valley, CA Castro Valley

Trail 5K8KHalf Marathon +3

From $25 Open 30 spots left

Trail Runs in Castro Valley, California