Grass Valley
Trail Running Calendar near Grass Valley 2026-2027
Explore the top trail runs near Grass Valley for 2026-2027! We've gathered 33 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
A looped endurance event in Auburn California from September 18 to 21 2026 featuring races from 3 hours to 72 hours on an approximately 0.75 mile loop.
October 2026
Experience the original Yuba Gold 50K point to point course as a self guided hybrid event through the trails of Nevada City during the month of October.
Trail runs near Bear Valley and Lake Spaulding with a 50K and a 24 mile option. The 50K includes a summit loop with about 5,700 ft of gain, rocky sections on Signal Peak OHV Road, cupless aid stations, and finisher medals.
A self-sufficient fatass style run in Foresthill featuring up to 20,000 feet of climbing, bushwhacking, and route-finding along the American River.
Trail races in Nevada City on October 11, 2026 offering a half marathon, 10K and 5K over mixed terrain with proceeds supporting Mines to Pines trail development.
Charity trail event in Cool, CA offering 5k, 10k and a trail half marathon with proceeds supporting Georgetown Divide youth programs and Camp Taylor scholarships.
Remote, self supported on and off trail foot event at Oxbow Reservoir with three escalating routes from about 15 to 43 miles.
Trail race at Salmon Falls Ranch with a one lap 10K and a two lap half marathon on singletrack trails, aid stations, and shuttle support for parking.
November 2026
Trail race at Darrington Trail Head by Folsom Lake offering 5K, 10K, 18M and 36M on rocky single-track with rolling hills, aid stations, drop bags, and a 10-hour overall time limit.
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 running at Magnolia Ranch Trail Head offering distances from 5K to 50K, rolling single track terrain, three aid stations and a 9 hour time limit.
Doomsday in Cool, CA on December 12, 2026 offers a 50K and a Half Marathon on trail courses with live tracking, route files, and a 200-runner field limit.
January 2027
New Year 5K and 10K run and walk starting at Chicago Park School in Grass Valley, with proceeds supporting local community organizations.