Annadel Half Marathon & 5K

Spring Lake Regional Park 

April 7

Half Marathon: 8:00 am

5K: 8:15 am 

5585 Newanga Ave., Santa Rosa, CA, 95405

The Annadel Half Marathon is a non-profit fundraising event to help build and maintain the trails in Annadel State Park.
The Half Marathon course is a hilly, and technical course designed for the experienced trail runner looking for a challenge. The 5K course is an out and back.  For more information visit our website.

We are partnering with Sonoma County Parks Foundation to offer the Annadel 5K. Funds raised through the Annadel 5K race will help to build new trails at Taylor Mountain Regional Park.

2018 Fundraising Goal is $30k! Help us meet our goal so we can contribute funds needed to rebuild trails, bridges, and map display cases damaged in the Sonoma County Wildfires. Annadel State Park needs us more than ever, join the race! 


  • Sports