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Mt. Diablo Half Marathon

Apr 24, 2027 at 11:00 AM PDT · Walnut Creek, CA · Half Marathon

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About this race

Mt. Diablo Half Marathon

Mt. Diablo Half Marathon is scheduled for Apr 24, 2027 at 11:00 AM PDT in Walnut Creek, CA. The listed distance is Half Marathon. This listing was most recently checked against Race Roster data on July 22, 2026.

What to verify before registering

Use the official race page to confirm the start time, exact venue, entry fee, registration deadline, packet pickup, course surface, elevation, time limit, age rules, stroller or pet policy, parking, transfers, refunds, and any schedule changes. The organizer’s page is the final source for operational details.

Planning for a spring race in Walnut Creek

April weather and course conditions can change quickly. Review the forecast and organizer updates close to race day, plan your clothing and hydration for the conditions, and allow extra arrival time for parking, restrooms, bib pickup, and the walk to the start area.

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