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!
May 2027
May 29, 2027 at Almaden Lake Park in San Jose, multiple runs from a half marathon to 1 mile events, plus a beer tasting and a beer mile with four beers included.
An 8 mile uphill race climbing 4,600 ft from Keeler to the historic Cerro Gordo town, finishing with a mountaintop barbecue, music, and shuttles back down. Spectator passes include the shuttle ride and food.
Mount Wilson Trail Race on May 29, 2027 features limited entry, age 14 and up, set alongside a free 16 week training program in Sierra Madre.
Trail races on one mile loops at a private Riverside horse ranch, offering 3 hour to 100 mile events plus a relay on May 29 to 31, 2027.
Trail races at China Camp State Park on May 29, 2027 offering 5K, 10K and half marathon courses with chip timing, marked single track, and cupless aid stations.
Trail races of 10K, half marathon and marathon in Toro Park near Salinas on a rocky, dirt-road course with a 16°C summer average.
Trail races in Joaquin Miller and Redwood parks with multiple measured distances, technical single-track sections, and fully stocked aid stations every 3–6 miles.
June 2027
Trail runs of 31.1 miles and 12.4 miles through Sierra National Forest, with spaced aid stations, onsite pre-race lodging and dinner, and no pets on course or campus.
A trail running event in Malibu Canyon on June 5, 2027 offering distances from a half marathon to 100K on singletrack and fire road in the Santa Monica Mountains.
A vineyard trail run at Orfila Winery with 3, 6 and 9 mile routes on packed dirt and wine tastings for runners over 21.
Trail races at Calero County Park on June 5, 2027 from a kids run to a 50K, featuring single track, hills, aid stations, toilets, and paid registration.
PCT 50 is a 50 mile out and back on the Pacific Crest Trail in Cleveland National Forest, climbing about 7,500 feet with multiple staffed aid stations.
Trail marathon relay in Griffith Park on June 6, 2027: teams of 2 to 5 share five legs of about 5.45 miles each, with a separate single loop 8K available.
Lake Chabot Trail Challenge on June 6, 2027 in Castro Valley features a chip timed half marathon and a 5K on scenic trails and roads.
Races on the paved Truckee River Trail starting and finishing at The Village at Palisades Tahoe, offering a half marathon, 8 Miler, and 5K with aid stations and awards.
A point-to-point 100 mile ultramarathon in the East Bay with about 18,000 ft of gain, a 33 hour cutoff, scheduled for June 12, 2027.
Loop trail race in the lower Susan River Canyon with 22K, 14K, and 7K options, cupless format, and aid stations along Bizz Johnson and South Side trails.
Trail ultras at Almaden-Quicksilver County Park on June 12, 2027, offering 100K, 50M, 50K, marathon and 30K with marked courses, aid stations, drop bags and pacer support.
Multi-distance trail and road event at Griffith Park with chip timing, aid station at the turnaround, custom finisher medals, and age-group awards.