California
California Trail Running Calendar 2026-2027
Explore the best trail runs in California for 2026-2027! Our updated list features 400 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
Trail race at Bothe-Napa Valley State Park on October 24, 2026 offering marathon, half marathon, 10K, 5K and virtual options with a 300-runner field limit.
Trail races at Redwood Regional Park on October 24, 2026 with 35K, half marathon and 10K routes, chip timing, marked trails, cupless aid stations, and limited field size.
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 13.6 mile trail half in the Marin Headlands with 2,156 ft of climbing, four stocked aid stations, shuttle service from San Francisco, a $25,000 prize purse, and community programs.
Cross-country meet at Radke Martinez Regional Shoreline on October 24, 2026, with three approximately 4.1 mile races over grass, dirt, and path surfaces.
Virtual worldwide challenge and an in-person gathering at the San Francisco Ferry Building on October 24, 2026, fundraising for the Breast Cancer Research Foundation.
A Halloween-themed family event in Pebble Beach on October 24, 2026 with 10K, 5K, and 2K courses plus an emergency preparedness fair and public-safety exhibits.
A vineyard 5K and 1 Mile fun run at Pianetta Winery with on course wine tasting for 21 plus and a finish line celebration with music and refreshments.
A 5K fundraising event in Los Angeles for Dyslexia Awareness Month with in-person and virtual options; proceeds support educational programs and resources.
Experience a technical trail challenge in Perris, CA, featuring a 200 mile ultramarathon and shorter distances during a festive Day of the Dead celebration.
Trail races at Caspers Wilderness Park near San Juan Capistrano offering 10K, half, 35K, marathon and 50K on well marked singletrack and fire roads.
Celebrate Halloween with a trail race through San Jose Hellyer County Park. Choose from distances including 5K 10K Half Marathon and Marathon with costume prizes and certified courses.
A Halloween themed map adventure in East Sacramento offering 5 km and 10 km courses with team checkpoints, neighborhood displays, and finish area snacks and drinks.
A 3.6 mile trail loop at Coastal Peak Park with about 585 ft gain per loop through coastal sage scrub and riparian canyons; part of the Southern California UltraRunner Grand Prix Series.
Trail races in Almaden Quicksilver Park from 5K to 50K over hilly dirt roads and single-track, with two staffed aid stations, drop-bag service for longer distances, and a finisher medal for all participants.
A brand new Halloween morning trail 5K at Pelona Vista in Palmdale that climbs the local big hill, with a costume friendly club atmosphere and $25 registration.
November 2026
A fundraiser in Joaquin Miller Park featuring a 5 km trail race and a 1 mile fun run to support Oakland Tech PTSA and student programs.
A single loop trail marathon in Mount Laguna, California, with 3,358 feet of elevation gain and Pacific Crest Trail views.
40th annual 6.45-mile trail race in Annadel State Park on November 1, 2026, with staggered head starts, awards for the top 13, and limited registration.
Three-day orienteering champs in Fresno November 6 through 8, 2026, with three new maps, club scoring for Northern and Southern California, and group camping at Eastman Lake.