Annadel Half Marathon
Always double-check with the organizer's website! This page may contain affiliate links.
Annadel Half Marathon
The Annadel Half Marathon is a nonprofit fundraising running event held at Spring Lake Regional Park, 5585 Newanga Avenue, Santa Rosa, CA, on April 17, 2027. The event offers multiple race distances that use the scenic trails of Annadel State Park and draws runners from the local area.
- Half Marathon (4-hour cut-off time)
- 10K
- 5K
Organizers state that a portion of event proceeds is donated to Trione-Annadel State Park and the Sonoma County Parks Foundation. In honor of Earth Day (April 24), the event is presented as a low waste event with cup-free aid stations, refill options, and a focus on park stewardship.
Each participant receives a race medal, an event shirt, and post-race beverages and snacks. Registrations are final and non-refundable; organizers encourage participants to consider purchasing race protection insurance during registration for added peace of mind. Visit the organization's website for the most recent information.
