Annadel Half Marathon, 10K & 5K
The Annadel Half Marathon and 5K is considered to be one of the biggest running events in Sonoma County! The Annadel Half Marathon is a non-profit fundraising event. We are partnering with Sonoma County Regional 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.
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