Annadel Half Marathon, 10K & 5K

APR
17
2027
Trail race on April 17, 2027 featuring a hilly half marathon plus 10K and 5K through Spring Lake Park and Annadel State Park.
Sat 17 Apr 2027
Half Marathon 10 kilometers 5 kilometers

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Annadel Half Marathon, 10K and 5K

The Annadel event on April 17, 2027 is a non profit fundraising race that has raised funds for park improvements over the past 17 years. Registration is open.

Distances offered:

  • Half Marathon
  • 10K
  • 5K

The half marathon course is hilly and technical, with over 1,500 feet of elevation gain across rocky and rooted terrain. The route begins at the Spring Lake Oak Knolls picnic area, winds through Spring Lake Park, and climbs into Annadel State Park. The course features green meadows, wildflowers, and a variety of trees.

The 5K is an out and back route that follows a gravel fire road a short distance into Annadel State Park.

This is a cup free event. Participants are asked to bring their own bottle or a reusable cup. Visit the organization's website for the most recent information.

Events nearby

Trail races at Bothe-Napa Valley State Park on March 20, 2027 offering Marathon, Half, 10K and 5K on single-track trails with streams and marked turns.
Trail races at Jack London State Historic Park featuring a half marathon, 5.5 mile and 5K through vineyards and Sonoma Mountain hills.
Chip timed 5K at Viansa Winery in Sonoma on April 18, 2027, including a t shirt, plastic wine glass, finisher medal that doubles as a wine stopper, and a wine pour.
Trail run on Pacific Union College grounds in Angwin CA with 26K, 10K and a 1 Mile Kids Run; proceeds support PUC Athletics.
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