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Annadel Half Marathon

Name: Annadel Half Marathon
Start: 2026-04-18
End: 2026-04-18
Location: Santa Rosa

Santa Rosa, United States • 18 Apr 2026

Annadel Half Marathon

The Annadel Half Marathon is a non-profit fundraising event. It takes place in Santa Rosa, California at Spring Lake Regional Park. The event includes three race distances: a half marathon, a 10K, and a 5K.

The half marathon has a 4-hour cut-off time. The 10K and 5K are noted as options for walkers and first-time participants. Each participant receives a race medal, an event shirt, and post-race beverages and snacks.

A portion of the event's proceeds is donated to Trione-Annadel State Park and the Sonoma County Parks Foundation. The event is described as low-waste with cup-free aid stations and a refill option, in honor of Earth Day. Visit the organization's website for the most recent information.

United States California Santa Rosa

Race information

Registration

Half Marathon

10 km

10k

5 km

Visit the organization's website for the most recent information.

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