Annadel Half Marathon
Santa Rosa, United States • 17 Apr 2027
Annadel Half Marathon, 10K and 5K
The event is a non-profit fundraising run held at Spring Lake Regional Park and Annadel State Park on April 17, 2027. Distances offered are:
- Half Marathon
- 10K
- 5K
The half marathon is described as a hilly, technical trail course with over 1,500 feet of elevation gain. The route passes through Spring Lake Regional Park and climbs into Annadel State Park across wet, rocky, and rooted terrain. The course starts near the Oak Knolls picnic area and winds through green meadows, wildflowers, and varied tree cover. The 5K is an out and back on a gravel fire road that goes slightly into Annadel State Park.
The race includes chip timing, a participant t-shirt, a finisher medal, and post race food and beer. There are three aid stations: Aid Station 1 at mile 6.12 (Louis/Warren Richardson), Aid Station 2 at mile 8.44 (South Burma/Marsh at Buick Meadows), and Aid Station 3 at mile 10.41 (Marsh/Canyon). Water and electrolytes are available at Aid Stations 1 and 3.
This is a cup free event; participants are asked to bring their own bottle or reusable cup. Parking at the park is $8 at the entrance or free with a Sonoma County Regional park pass. Visit the organization's website for the most recent information.