Grass Valley
Trail Running Calendar near Grass Valley 2026-2027
Explore the top trail runs near Grass Valley for 2026-2027! We've gathered 28 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
A remote, unmarked backcountry foot race at Oxbow Reservoir, CA offering three routes from about 15 to 43 miles with large elevation gain.
Trail half marathon and 10K at Salmon Falls Ranch near Pilot Hill CA on singletrack with creek crossings and aid stations; proceeds benefit the American River Conservancy.
November 2026
Trail races at Darrington Trail Head in Folsom Lake offering 5K, 10K, 18M and 36M on rocky single track with aid stations and marked routes.
A Thanksgiving Day event at Hooper Stadium featuring 5K and 10K runs, a 5K walk, and a kids race on mixed trail and street terrain.
December 2026
Trail race at Magnolia Ranch, Pilot Hill CA on December 12, 2026 offering 5K to 50K on dirt single track with rolling hills, three aid stations, and pink ribbon course markings.
Trail races in Cool, CA offering a 50K with 5,100 ft climbing and a Half Marathon with 1,250 ft, limited to 200 runners and featuring aid stations and live tracking.
January 2027
New Year 5K and 10K run and walk starting at Chicago Park School in Grass Valley, with proceeds supporting local community organizations.
February 2027
March 2027
Experience the rugged beauty of the Sierra Nevada foothills on this 50K out and back course featuring 6,500 feet of elevation gain along the historic Western States Trail.
Trail ultras around Folsom Lake with 26 mile, 50K, 50M and 100K options, marked single-track, multiple aid stations, drop bags and buckle awards for longer distances.
Trail races of 5K, 10K, half marathon and 35K on the Western States trail near Auburn, CA, featuring steep climbs, technical single track, cupless aid stations, and chip timing.
April 2027
A women only 10K trail loop in Auburn with aid stations, age group awards, packet pickup the day before, and travel prizes to Spain awarded by placement and random draw.
Trail and mountain-bike endurance events in Pilot Hill, CA on April 17-18, 2027, offering 25K, 50K, 50M runs and a 50K MTB through single-track and double-wide trails.