Annadel Half Marathon, 10K & 5K

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

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Annadel Half Marathon, 10K & 5K

The Annadel event on April 17, 2027 is a nonprofit fundraising race that has raised funds for park improvements for 17 years. The event offers multiple distances on natural-surface trails and fire roads.

The Half Marathon course is hilly and technical, intended for experienced trail runners. The route starts at the Spring Lake Oak Knolls picnic area, winds through Spring Lake Park, and climbs into Annadel State Park. The half marathon includes over 1,500 feet of elevation gain and runs over rocky and rooted terrain. Runners pass green meadows, wildflowers, and a variety of trees.

The 5K is an out and back route that follows a gravel fire road slightly into Annadel State Park. A 10K distance is also offered.

This is a cup free event; participants are asked to bring a personal water bottle or reusable cup. Visit the organization's website for the most recent information.

Half Marathon
Half Marathon
10 km
10k
5 km

Events nearby

The 33rd annual Phil Widener Empire Open is a 3.4 miles PA/USATF cross country race at Spring Lake Regional Park featuring rugged trails and a $1500 prize purse.
A multi distance trail event at Lake Sonoma on October 17-18, 2026 featuring 100 mile, 50 mile, marathon and four person relays with aid stations and free camping.
Trail marathon, half marathon, 10K and 5K in Bothe Napa Valley State Park with orange ribbon route marking, limited field and on course aid stations.
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