Trail Running calendar near Cowles Mountain 2026-2027

A holiday trail event in San Diego with marathon, half marathon, 10K and a new six hour Hill Climb on a 2.5 mile loop. The event includes solo and team costume awards and King and Queen of the hill honors.

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.

Lake Perris hosts a Spartan obstacle weekend Jan 23–24, 2027 with 5 km, 10 km, 21 km and kids races across a flat, fast course by the lake. Team entries, spectator access, volunteer options and service member discounts are available.

A January 2027 trail event at Lake Hodges, Escondido, offering 50K, half marathon, 10K, 5K, a kids dash, and a new Hercules DemiGod Challenge that combines the half, 10K, and 5K within five hours.

A 24 hour trail event in Perris, CA on January 29, 2027 where runners repeat a Molcajete 1.0 loop of more than 4 miles. Individual and four-person team entries are available, with awards for top individuals and teams.

Trail races at Daley Ranch in Escondido, CA include a 50K (two 15.6 mile loops, 6,318 ft gain) and a 13.1 mile half, with three stocked aid stations, set cutoffs, race shirts, finisher medals, and awards.

A 10th annual trail race in San Pasqual Valley with 20 mile, half marathon and 10K routes through vineyards and orange groves. Longer routes summit Raptor Ridge twice and the finish includes a free local wine tasting.

Self supported single-loop trail run of about 51 miles in San Diego on Feb 20, 2027. No fees, no aid and no course marking; participants must navigate and carry supplies.

Trail races at Goodman Ranch Sycamore Canyon Preserve near Poway, California with 100K, 50K and half marathon options, offered as solo entries or relay teams. Solo 100K entrants must have completed a 50K or longer race.

Trail runs in Anza Borrego Desert on March 13, 2027 with 50K, marathon and half marathon courses, marked routes and aid stations. The event starts at Stagecoach Trails RV Resort with campsite facilities and course maps provided.

Timed 6-, 12-, and 24-hour running events at Lake Cuyamaca on a scenic 2 mile loop near Julian, CA, with on-site dining, a store, and camping and RV options.

Tough Mudder Los Angeles on March 20, 2027 at Lake Elsinore Raceway blends winding single-track and arid ridges with waterlogged mud obstacles. Event formats include 15+ km and 5 to 8 km courses, an Infinity multi-lap option, and spectator..

Tough Mudder Los Angeles at Lake Elsinore Raceway on March 20, 2027 offers multiple course options including a 15K with 20 plus obstacles, a shorter 5 to 8 kilometer course, Infinity laps, spectator access, and group packages.

An annual trail event at Soboba featuring the first NATRO Marathon Championship plus a half marathon, 5k and kids 3k for ages 12 and under. Native and Open divisions, finisher awards, and proceeds benefit the Noli Indian School scholarship..

A coastal trail race in Del Mar offering 10K and 5K out-and-back courses on hard-packed dirt, noted for flat, fast running, lagoon views, and a downhill finish; held March 27, 2027 as a championship qualifier.

Multi distance trail running and gravel bike events at Diamond Valley Lake in Hemet, California. Routes include lakeside loops, out and back courses, a stroller 5K and a kids fun run.

San Diego Spartan Event Weekend at Pala Fox Raceway on April 10 and 11, 2027 features a 5 km Sprint, a 10 km Super, kids races, spectator access, and a post-race festival with mud pits and rope climbs.

A 50K out-and-back on Pacific Crest Trail and desert tracks, featuring a steep 2,000 foot descent into Box Canyon and a long climb back up Oriflamme Canyon, with stocked aid stations and a 150-runner field.

A 100-mile loop around Lake Cuyamaca and nearby parks on mostly single-track trails, the San Diego 100 features about 15,600 feet of climbing, a 32 hour cutoff, crewed and Solo divisions, and strict qualification and volunteer requirements.

A self-supported marathon at Canyonside Park Driveway in San Diego on May 3, 2026, presented as a non-race with no course markings or aid stations. Participants may crew or pace and can run any portion; a GPX file and restroom access near m..