Trail Running Calendar California 2026-2027

Join the 3rd Annual Porterville 5K and 10K Trail Run on April 18, 2026 at Porterville Military Academy for dirt path out and back courses, kids races and a virtual option. Enjoy shirts, medals, chip timing and support the local EAA chapter.

Celebrate Earth Week with trail runs through Annadel State Park at Spring Lake Regional Park in Santa Rosa. This nonprofit fundraiser features half marathon, 10K and 5K distances, low waste aid stations, and supports local park stewardship.

Join the No Foolin' Foot Race in San Carlos on April 18, 2026 with 1K kids, 5K, 10K and a new 15K route across Big Canyon, Eaton and Pulgas Ridge. Festival vibes, tech shirts, pro timing and proceeds help local trails.

Experience redwood canopy and sweeping ridge views at the Woodside Purisima Creek Crossover on April 18, 2026, with 10K, half marathon, 35K and 50K options. Limited to 450 runners, this scenic trail event features aid stations and finisher..

Join the family friendly Paseo de Mariposa Trail Race on April 19, 2026 in Mariposa, California, starting at the historic 1851 courthouse. Pick a scenic 5K or adventurous 12K with creek crossings, climbs and community spirit.

Explore classic Western States Trail country at the Canyons Endurance Runs in Auburn California, April 23 to 25 2026. Choose from 25K to 100 mile races, cross iconic spots like Rucky Chucky and support local trail stewardship.

Join the 38th Mt Tam Wild Boar Half Marathon and 10K on April 25, 2026 at Mt Tamalpais State Park for a scenic ridge and trail run with sweeping views of Bolinas Lagoon and the Pacific. Entry is limited to 300 runners for an intimate race d..

Machete Trail Madness at Lake Perris on April 25, 2026 offers 10K, 50K and 100K trail options over rugged lakeside loops. Camp with the group, use staffed aid and grab free pro photos of your effort.

Run the scenic Las Virgenes Canyon Ultra Trail Races in Woodland Hills, CA, offering distances from 6K to 100K across challenging trails with rewarding climbs and views. Fully supported course and lively post-race food, music, and medals ma..

Run the SJVDHA Pacing for Prevention 5k in Tesoro Viejo, Madera, to support the American Cancer Society. A family friendly, scenic course with wellness booths and on site oral cancer screenings.

Tackle the Shadow Strike Unsanctioned Run in Chino Hills, a 4+ mile all terrain challenge across trails, gravel and open streets. No clocks, just navigation to checkpoints and cash prizes for top finishers and random participants.

Join the 14th annual Aut2Run for Autism at CSU Channel Islands on April 26, 2026, and support the Autism Society Ventura County. Choose from 15K, 10K trail, 5K, 1 mile, Fun K for kids and participants with special needs, or run virtually.

Coyote Two Moon is a challenging multi distance trail running weekend in Ojai, California, May 1 to 3, 2026, with options from 10K to a rugged 100 mile featuring massive climbing. Field is limited to 150 runners so sign up early.

Take on the San Diego 100, a scenic 100 mile loop around Lake Cuyamaca near Julian, CA, on May 1 and 2, 2026, an official Western States qualifier for solo or crewed runners. Expect rugged single track, big climbs, a 32 hour cutoff and unfo..

Honor Dingneng Wang at this self supported marathon around Canyonside Park Driveway in San Diego. Free registration, no official aid or timing so bring your own crew or pacer and plan for a 7 hour cutoff.

The Miwok 100K is a 62 mile trail ultramarathon through redwoods, exposed ridgelines and coastal cliffs in the Marin Headlands. It is a demanding, well marked race with relay entries and a strong commitment to sustainability.

Experience the Wild Wild West Marathon & Ultra in Lone Pine, California on May 2, 2026 with 50 Miler, 50K, Marathon or 10 Miler routes winding through the Alabama Hills and Mount Whitney foothills. Scenic views and plentiful aid stations aw..

A trail run through Orfila Vineyards in Escondido with 3, 6, and 9 mile options, three wine tastings for participants over 21, a kids dash, and a post-race private tasting and food truck on site.

Join Tails & Trails on May 3, 2026 for a fun charitable run and walk supporting Dogwood Animal Rescue. Choose the in person 5K Dogwood Dash or a virtual any distance and help animals while you enjoy the outdoors in Windsor, CA.

Hit the trails at Pacific Union College in Angwin on May 3 for Angwin to Angwish, with 26K, 10K and a 1 mile kids run. Scenic courses and a community vibe, with proceeds benefiting PUC Athletics.