Trail Running calendar near Descanso 2026-2027

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.

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.

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.

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.

A trail race weekend at Los Coyotes Reservation featuring Single Loop, 6H Ultra and 24H Ultra options across desert and alpine trails. Ragnar Village provides camping, bonfires, food trucks and evening activities.

A team trail relay at Los Coyotes Reservation on October 23 and 24, 2026 featuring desert and mountain single track, a 112.8 mile course shared across teams, and on site camping plus glamping at Ragnar Village.

A trail running event at Caspers Wilderness Park on October 24, 2026, offering 10k, half marathon, 35k, marathon and 50k courses. Courses are described as marked and supported, with an athlete guide and past results available.

Machete Muertos 200 is a multi-distance trail event at Lake Perris, CA from October 28 to November 1, 2026. The 200 mile race includes over 44,000 feet of elevation and a 96 hour cutoff; camping and cash prizes are provided.

Run through the Pine Creek Wilderness on a wide dirt fire road in Alpine. This out and back course offers both a 10k and a half marathon distance with a steady climb and a fast downhill return.

Six hour timed loop race around a 5 mile lake course in San Diego with chip timing, four aid stations, on-course restrooms, and finisher awards. The field is limited to 75 entrants and the event is USATF sanctioned.

Experience a fixed time trail challenge at O'Neill Regional Park. Run as many 2.75 mile loops as possible through scenic canyons during an 8 hour, 6 hour, or 3 hour session.

Roosters Backyard Ultra returns to Rohr Park in Chula Vista, California, using a smooth, hard-packed loop with one gentle hill; the backyard ultra format has runners complete repeated laps. Dog friendly with car camping and pop-up tents all..

Burn off the holiday feast at the Black Mountain Turkey Burner. Choose between 5K, 10K, or a technical half marathon with rewarding views over San Diego.

One-mile loop ultrarun at Washburn Ranch in Hemet, CA offering 3h, 6h, 12h, 24h, 100 mile (31 hour) and relay options. Hardpacked dirt surface, chip timing with live tracking, on-course aid, camping, and continuous food service.

A point to point 50 mile trail run near Julian, California that climbs Stonewall Peak and finishes at Stagecoach Trails RV Resort. The course crosses wooded park terrain into desert and allows 14.5 hours to complete.

Experience the trails of Daley Ranch at the 5th Annual Dixon Lake Trail Race. Choose from 5K, 10K, or 10 mile distances featuring scenic views from Stanley Peak and a qualifying course for the ERS Championship.

A holiday trail event in San Diego on December 20, 2026 offering Marathon, Half Marathon, 10K and a new six hour hill climb based on 2.5 mile laps. Costume awards are presented in solo and team categories.

Experience a diverse trail running event in Escondido featuring everything from a 50 mile ultra to a stroller friendly 5k. Explore the valley floor or climb to the summit of Raptor Ridge in this cupless race series.