California
California Trail Running Calendar 2026-2027
Explore the best trail runs in California for 2026-2027! Our updated list features 370 exciting trail runs across the region. Find your next trail run in California below and join the trail community at these great events!
April 2027
Multi-distance trail event in Ojai CA from 10K to 100 Miler with detailed route marking, qualification requirements, 200 total spots, and a no-refund policy.
100 mile loop around Lake Cuyamaca on mostly single track, about 15,600 feet of climbing and a 32 hour time limit.
A 24 hour trail race on roughly 5 mile loops in Maple Hills near Big Bear City, CA, with on-course aid, basecamp crew access, and a 100 mile 20 lap challenge.
May 2027
Trail running in Placerita Canyon on May 1, 2027 with distances from 5K to 60K, 6 and 12 hour options, relay teams, camping, and cupless aid stations.
A 5k through Whittier Narrows Park with a post-run festival featuring tacos, beer, live music, optional chip timing, and finisher items.
A backyard ultra on a private farm near Georgetown, CA where runners complete a 4.167 mile loop every hour until one runner remains.
Trail races in Lone Pine, CA on May 1, 2027: 50 mile, 50K, marathon and 10 mile courses through the Alabama Hills.
A 62 miles trail ultramarathon in Stinson Beach, CA across redwoods, ridgelines and coastal cliffs, with relay teams, sustainability practices and qualifying status.
A roughly 3 Mile urban obstacle course in Fresno with stadium steps, garage climbs, a half mile street run and a 220 stair ascent to the Grand Tower.
Trail run in Angwin, California offering 26K, 10K and a 1 Mile kids race with cupless aid stations, free parking, and proceeds supporting PUC Athletics.
Memorial marathon in San Diego at Canyonside Park Driveway; a self-supported, unmarked course with no organizer aid and a GPX file available.
A timed half marathon on May 8, 2027, from Quintessa Winery to Yountville with exclusive vineyard access, festive aid stations, and a finish-line Wine Village.
A community trail run and hike on May 8, 2027 at the Point Arena Stornetta Lands supporting ACORN's Students Protecting the Coast program.
A 13.1 mile point-to-point half marathon on May 8, 2027, around Bass Lake in the Sierra National Forest with mixed dirt and paved terrain, five cup-free aid stations, and shuttle logistics.
Trail races of 50K, 25K and 5K at Crystal Cove State Park on May 8, 2027, featuring ocean views and loop courses, with proceeds supporting the John Wayne Cancer Foundation.
Trail races from 1 mile to 50K on singletrack at Susanville Ranch Park on May 8, 2027 with multiple aid stations and proceeds supporting Lassen Land and Trails Trust.
Trail races from 50 yards to 50K around Lake Anza in Tilden Regional Park, Berkeley on May 8, 2027, with courses measured by a Rolatape wheel.
Trail races from Stinson Beach into Muir Woods on May 8, 2027, with marathon, half marathon and 7 mile options and a 300 runner limit.
A 5k event at Dry Creek Preserve in Woodlake CA on May 8 2027 offering live and virtual races plus a kids race with proceeds supporting the preserve.