Trail Running Calendar California 2025-2026

The Lake Chabot Trail Run is a diverse running event taking place at Lake Chabot Regional Park in Castro Valley, California. Scheduled for November 8, 2025, it features multiple race distances including a 50K, Marathon, 30K, Half Marathon, 8K, and a free Kid's Run for children aged 6 and under. The..

The Catalina Island Half-Marathon & 10K is a premier trail running event set in the picturesque town of Avalon, California. Participants can choose between a challenging 13.1-mile half-marathon or a scenic 6.2-mile 10K course. The race features stunning ocean views, historic landmarks like the Wrigl..

The Mt. Tam Trail Run, organized by Inside Trail Racing, offers a thrilling experience for trail runners of all levels. Set in the scenic Mt.Tamalpais State Park, the event features four race distances: 10K, Half Marathon, 30K, and 50K. Participants will enjoy breathtaking views as they navigate cha..

The Tulare Santa Fe Trail-A-Thon 5k is an annual running event organized by the Tulare Sunrise Rotary Club, taking place at Live Oak Park in Tulare, California. This community-focused event supports the club's High School Scholarship Program, which awarded significant scholarships to local students...

The Sri Chinmoy 6-Hour Race in San Diego offers participants a scenic 5-mile loop course around a tranquil urban lake, perfect for runners and walkers of all paces. This event is ideal for those training for marathons or looking to push their endurance beyond traditional distances. Athletes will ben..

Caspers Trail Races, set to take place in San Juan Capistrano, CA, features a variety of trail running events including a 10K, half marathon, 30K, marathon, and 50K. Organized by KH Races, the event promises well-supported and clearly marked courses, along with appealing race swag for participants...

The Falcon Crest Winter Trail Challenge is an exciting running event set in the scenic foothills of El Dorado Hills, California. Participants can choose from various distances, including 5K, 10K, 15K, Half Marathon, 30K, and a Trail Marathon, all featuring predominantly single-track trails with a mi..

The 4 Mile Hill Challenge is an exciting running event scheduled for November 15, 2025, at the Audubon Center at Debs Park in Los Angeles, CA. This event features a scenic 4-mile course that includes rolling hills and all-trail paths, making it suitable for participants of all skill levels, from beg..

The Tierra Redonda Mountain Trail Run is an exciting trail running event scheduled for November 15, 2025, in Bradley, California. Participants can choose from various distances, including 48-hour, 24-hour, 20km, 10km, and 5km options, catering to runners of all skill levels. This event is part of Al..

The Darrington Single Track Trail Challenge is an exciting running event taking place in Pilot Hill, CA, featuring multiple race distances including a 36-mile, 18-mile, 10K, and 5K. Participants will enjoy scenic trails along the shores of Folsom Lake, characterized by rugged dirt paths and breathta..

The Zoom Turkey Trot is a festive running event taking place in San Jose, California, featuring multiple race options including a 5K, 10K, and Half Marathon, as well as youth categories and a free Kid's Run. Participants can enjoy a scenic run along the Coyote Creek trail on Thanksgiving morning, wi..

The Quad Dipsea will take place in Mill Valley on Saturday 29 November 2025.

The Quarry Turkey Half Marathon is a family-friendly running event taking place on November 29, 2025, at Quarry Lakes Regional Park in Fremont, California. Participants can choose from a half marathon, 10K, or 5K race, along with a free Little Turkeys Race for children. The event encourages Thanksgi..

The Boundiful Endurance Runs is an exciting running event held at Washburn Ranch in Hemet, California, featuring a unique 100% hardpacked dirt surface course. Participants can choose to run solo or as part of a relay team, with options for 100m, 24-hour, 12-hour, 6-hour, and 3-hour races. The event..

The Black Mountain Turkey Burner is an annual trail race held in San Diego, California, designed to help participants burn off their holiday meals. Scheduled for November 30, 2025, this event features three race categories: a challenging half marathon, a 10K, and a 5K, each offering varying levels o..

The ZombieRunner Quarry Lakes event is a running competition held at the scenic Quarry Lakes Regional Recreation Area in Fremont, California. Participants can choose from various distances, including a 5K, 10K, Half Marathon, 30K, and Marathon, along with youth categories and a free Kid's Run. The c..

The Calero Trail Run - Winter is an exciting trail running event held at Calero County Park in San Jose, CA. Participants can choose from various distances, including a 50K, Trail Marathon, 25K, Half Marathon, 15K, 10K, 5K, and a Kids Run. The course features scenic single tracks, hills, and dirt pa..

The Death Valley Trail Marathon, set for December 6, 2025, is a scenic wilderness trail run held in Death Valley National Park, California. Participants can choose between a full marathon and a half marathon, both of which traverse a gravel jeep road through the stunning Titus Canyon. The event is l..

The Anza Borrego Cuyamaca 50 Mile Run is a scenic point-to-point race set in Julian, California, showcasing some of San Diego's most beautiful trails. Participants will traverse 50 miles, starting at the Sunrise Trailhead and winding through Cuyamaca Rancho State Park, including an ascent of Stonewa..

The Over The Hill Track Club High Desert 50K and 30K is an annual running event held in Ridgecrest, California, organized by the Over the Hill Track Club since 1986. Scheduled for December 6, 2025, this event features two distances, 50K and 30K, both starting and finishing at the Cerro Coso Communit..