Trail Running calendar near San Marcos 2026-2027

An endurance event at Montgomery Waller Park in San Diego on July 24, 2026, held on a 1.22 mile loop of trail, grass and bike path. Timed events run from six hours to 24 hours, plus a social run and a half marathon option.

Night trail event on July 25, 2026 with a 4.6 mile loop, distances from 9 mile to 50K, mandatory headlamp and aid stations each loop.

A free, social, non-competitive trail group run on July 25, 2026 in Newport Coast, CA. The route is about 6.5 miles with roughly 1,000 feet of gain on hilly, rocky trails; participants should have trail experience and bring hydration.

Trail and road races at Green Valley Lake offering 5K, 10K and half marathon distances with mixed paved and dirt terrain, aid stations about every 1.5 miles, chip timing and post-race activities at the Community Garden.

Experience trail running in Orange County with several race distances ranging from a 5k to a 6 hour timed challenge. Navigate a scenic 3.3 mile looped course with multiple early bib pickup options available.

Experience a mountain run at 4,720 feet elevation through the pine forests surrounding Lake Gregory. This longstanding community event offers 5K and 10K courses on semi paved paths for runners and walkers of all levels.

## Conquer the Wall is an annual uphill running event at Snow Summit near Big Bear Lake. The one mile course rises about 1000 feet from a 7000 foot start and supports Big Bear High School cross country.

The 21st Annual Martha Walker Wild Duck is a 5 km cross country race at Guajome Regional Park in Oceanside, California. It is the opening race of the 2026 Dirt Dogs XC Series and includes a race flyer and course maps.

A 5k trail run at Red Rock Wilderness near Silverado, CA featuring fire roads and single track, 300 feet of climbing, one aid station, a cupless policy, and no pets allowed.

A free, untimed 3 mile trail run for the local trail community with a grab bag of vintage ERS swag, limited to 250 participants and held near the San Dieguito Lagoon on August 26, 2026.

A night trail run on private ranch trails in Alpine, California, under reflective course markers. Multiple loop distances are offered, headlamps are required, camping is available and aid stations will be illuminated.

Dirt Circus Los Angeles is a one day community running festival on August 29, 2026 that pairs a four mile group trail run with an expo of brands, race directors, vendors, food, and a raffle.

Trail races in Pine Valley, California on September 5, 2026 offering 50 kilometer and 15 kilometer options. Both races have fixed cutoffs, marked trails with frequent ribbons, staffed aid stations, and specific rules for pacers, crews, and..

A memorial stair-climb in San Diego to honor the 403 emergency responders lost on September 11, 2001, raising funds for FirefighterAid with a 2026 goal of $120,000.

A community running event at John Glenn High School in Norwalk on September 5, 2026, supporting Cerritos High School and honoring local history. Features a 3 mile in person and virtual option, a youth sprint and a high school invitational.

A mountain based Tough Mudder at Bear Mountain on September 12 2026 offering 10K and 5K obstacle courses plus spectator and group options.

A 5 km Stadion obstacle race with 20 obstacles at Angel Stadium on September 12, 2026, plus a 1-1.5 km kids race and spectator access.

Experience a scenic multisport event at Crystal Cove State Beach featuring swim legs in the Pacific Ocean and a closed bike course on the Pacific Coast Highway. Choose from triathlon duathlon aquabike or trail run options.

An obstacle course race weekend at Lake Elsinore Raceway with Sprint, Super, kids races, Hurricane Heat events, and spectator access on Sep 26-27, 2026.

Double Peak Challenge in San Marcos on September 26, 2026 offers 10K, 5K and a free Kids Trot plus a race expo and awards.