California
California Trail Running Calendar 2026-2027
Explore the best trail runs in California for 2026-2027! Our updated list features 380 exciting trail runs across the region. Find your next trail run in California below and join the trail community at these great events!
October 2026
A trail event at Hahamongna Watershed Park offering 5K, 10K and a half marathon with marked courses, chip timing, aid stations and commemorative wooden medals.
A themed charity run and community festival on October 18, 2026 in Downtown Roseville, CA, supporting the bleeding disorders community. The day includes a timed 5K, a one mile walk, festival food, carnival games, and a remembrance ceremony.
A multi-distance in-person and virtual run along the Coastal Trail in Half Moon Bay that raises funds for Senior Coastsiders' programs for older adults.
Weekend at Burney in Burney, CA runs October 22 to 24 and features 48 hour, 24 hour, 12 hour formats plus 13.8 mile and 4.8 mile races. All races are cupless and free registration is available for Indigenous runners.
An endurance event at Beals Point, Granite Bay featuring hourly 4.16 mile laps until one runner remains, plus a 12 hour Mini Last Person Standing option. Aid is available at the start area and runners may set personal aid stations.
A backyard ultra at Beals Point in Granite Bay where runners run a 4.16 mile loop each hour until one remains. A 12 hour Mini format offers the same hourly lap with a fixed limit.
A 200-mile, multi-day endurance run around San Diego County with an 82-hour cutoff, required crew support, rugged terrain, and a limited 24-runner field.
Trail event at Los Coyotes Reservation with a 3.1 mile loop plus timed 6H and 24H ultras on a 15.7 mile course, with camping and village amenities.
Trail team relay at Los Coyotes Reservation in the Anza-Borrego area on Oct 23 to 24, 2026, featuring several team formats and a 112.8 mile course.
At Wildwood Canyon State Park in Yucaipa, the event offers an 8 hour timed loop and a 6K on a 3.7 mile loop with about 600 ft vertical gain.
A remote, unmarked backcountry foot race at Oxbow Reservoir, CA with three unassisted route options from about 15 to 43+ miles.
Trail races in Agoura, CA offering 50K, half marathon and 10K on Chesebro Canyon terrain with stocked aid stations, medals and post race food
A multi-distance trail event on the Gaviota Coast near Santa Barbara, California, featuring routes to Gaviota Peak and ridge views. Distances range from 12 kilometers to 100 mile with substantial elevation gain and on-course aid.
Experience the autumn scenery of Jenkinson Lake at the Trail Run at Sly Park. This event offers distances from a 5K to a 50K ultra on shaded pine forest trails with rolling hills and lakeside views.
Trail run at Salmon Falls Ranch with a single lap 10K (10.5K) and a two lap half marathon on single track trails featuring creek crossings, climbs and views. Proceeds support the American River Conservancy.
Trail races at Bothe Napa Valley State Park offering marathon, half marathon, 10K and 5K on single track with streams and hills, limited to 300 participants.
Oakland Hills Trail Run features 10K, half marathon and 35K courses through Redwood Regional Park with technical trails, marked routes, aid stations and chip timing. The event is cupless and limited to 330 runners.
A rugged half marathon on Santa Cruz Island featuring oak canyons, five creek crossings, steep climbs and exposed ridge running. Organized by Ventura County Sheriff’s Search and Rescue, proceeds benefit SAR charities and entry includes boat transport..
A women's trail half marathon in the Marin Headlands on October 24, 2026 featuring a new 13.6 mile course, 2,156 feet of climbing and coastal views of the Pacific and Golden Gate Bridge.
A cross-country meet at Radke Martinez Regional Shoreline on October 24, 2026 with three 4.1 mi races over grass, dirt, and path terrain.