Trail Running calendar near Fallbrook 2026-2027

We have found 114 Trailruns within 80 miles of Fallbrook. See below where and when you can find the races.

Experience an obstacle course race inside Angel Stadium. Navigate a 5 km course with 20 obstacles and stadium bleachers or participate in the dedicated kids race at this historic Anaheim ballpark.

An evening trail event in Griffith Park with 10 mile relays for teams of 2 or 4, a 5K solo race, a 1 mile kid run, and a free agent leg, on scenic, well marked courses with chip timing and on-course aid.

Experience rugged trail racing at Lake Elsinore Raceway with 5K and 10K obstacle courses. This event weekend features mud and open terrain alongside endurance challenges and dedicated races for kids.

This trail 5K takes place at Ascot Hills Park with views of the Hollywood Sign and Dodger Stadium. The chip-timed event benefits a local high school cadet program. A virtual race option is also available.

Traverse technical single track through the Angeles National Forest on this historic mountain race. Choose between 25K and 50K distances starting from the iconic summit of Mount Wilson.

A San Marcos trail event with a 10K, 5K and Kids Trail Trot that climbs to Double Peak’s summit at 1,558 feet; bibs, wooden medals and shirts are listed as finisher items, and registration closes Wed, Sep 23 at 12:00 PM PT.

A seaside themed run in Long Beach offering 5K, 10K, half marathon and family distances with chip timing, free race photos, finish line pizza and a costume contest.

October 2026

A historic point to point 100 mile ultramarathon through the San Gabriel Mountains from Wrightwood to Altadena with about 21,610 feet of climb. Entry for 2026 was by lottery with qualifier and trail work requirements.

UTMB Index

Experience a 100 kilometer trail run through the diverse landscapes of Cuyamaca Rancho and Anza Borrego Desert State Parks. This scenic endurance race traverses pine forests and oak woodlands just east of San Diego.

Experience a 9.1 mile mountain race at Mt Baldy featuring nearly 4000 feet of vertical gain. High altitude trails lead participants to the 10064 foot summit for a true alpine test in the Angeles National Forest.

Run a scenic 5K on the shaded, groomed horse trails of Palos Verdes Peninsula. The event supports Strides in Recovery, a nonprofit helping people in addiction treatment through running. Participants receive a medal, t-shirt, and can enjoy a..

A two-day trail running festival in Big Bear Lake, California offering five distances from 10.5 km to 162 km. Courses cross high desert, sub alpine and semi-arid terrain and carry UTMB World Series Americas Major status with qualification p..

UTMB Index

Experience remote mountain running in the Cleveland National Forest with three distances featuring significant elevation and coastal views. The event offers well supported aid stations and serves as a qualifier for the Angeles Crest 100.

An obstacle event in Phelan, California where people and their dogs navigate a 20 acre course with over 20 obstacles, including mud, water and problem solving. The program also offers a 1k walk/run and a volunteer option.

A multi distance event on the Cahuilla Indian Reservation in Anza, California. It uses a runnable 2 mile loop for fixed time races and a 100 mile event, with camping, limited RV spots and a real food aid station, fundraising for tribal yout..

Experience a diverse weekend of trail running and off road duathlon at San Diego’s Scenic Lake Hodges. Choose from distances ranging from a kid’s mile to a 50K ultra marathon or tackle the mountain bike and run challenge.

Trail races in Julian, California featuring 50K, marathon and half marathon courses that climb Cuyamaca Peak on mostly single track trails with significant elevation change and mountain views.

Experience scenic singletrack and natural terrain at Hahamongna Watershed Park in Pasadena with options for a trail half marathon, 10K, or 5K on Sunday, October 18, 2026. Perfect for trail runners seeking a challenging yet runnable course.

A revived 200 mile endurance run based in Escondido, California, that circumnavigates San Diego County over varied terrain. Field limited to 24 experienced ultrarunners; crews are required and profits go to a Native American charity.

Test your limits at the Los Coyotes Reservation with single loop or ultra timed trail races. Run through alpine forests and desert landscapes before enjoying camping, bonfires, and yoga at the Ragnar Village festival site.