Annadel Half Marathon

Santa Rosa, United States • 6 Apr 2025

The Annadel Half Marathon is a non-profit fundraising event held in Sonoma County, featuring a challenging course designed for experienced trail runners. Over the past 14 years, the event has successfully raised funds to enhance the beauty of the local park. The Half Marathon course includes over 1,500 feet of elevation gain, winding through scenic landscapes of green meadows, wildflowers, and diverse trees. Additionally, the event offers a 10K and a 5K option, with the latter being an out-and-back route into Annadel State Park. Proceeds from the race benefit park improvements for community enjoyment. Visit the organization's website for the most recent information.

Race information

21 km
457 m+
Half Marathon
10 km
10k
5 km
Visit the organization's website for the most recent information.
Trail runs nearby

The Lake Sonoma 100K / 55K will take place in Geyserville on Saturday 19 October 2024. You can run between 55 and 100 kilometers.

The California Fall Classic 100K and 55K at Lake Sonoma is set for October 19, 2024, featuring two challenging courses through the scenic wine country of Healdsburg, California. This event, previously known as the Lake Sonoma 100K, offers a unique opportunity for runners to qualify for the Western S..

The Napa Fall Wine Country Marathon will take place in Calistoga on Saturday 26 October 2024. You can run between 10 and 26 miles.

The Lake Sonoma 100 Miler is a unique and exciting trail running event held in Geyserville, California. This challenging race features approximately 26,000 feet of elevation gain over 100 miles of predominantly singletrack terrain, making it suitable for seasoned trail runners. The event fosters a f..

The Big Alta is an exciting trail running event taking place in Marinwood, California, organized by Freetrail and Daybreak Racing. Participants can choose between two challenging single-loop courses: a 50K and a 28K, both offering breathtaking views of the San Francisco Bay Area. The routes feature ..

The Napa Valley Trail Marathon will take place in Calistoga on Saturday 22 March 2025. You can run between 10 and 26 miles.