Trail Running calendar near San Marcos 2026-2027

Run a trail half-marathon or 10K on scenic Catalina Island, starting in Avalon. The courses feature climbs, ocean views, and pass historic landmarks. A shorter kids run is also available.

This 50 mile point to point journey traverses from mountain trails to the desert floor. The finish at a campground offers a post race meal, showers, and camping. A morning shuttle is available for an extra fee.

A 28k trail run in Fremont Canyon at Irvine Regional Park featuring about 3800 feet of elevation change and four aid stations. The course runs on fire roads, is cupless, and participants are asked to carry personal hydration.

A last person standing race in Yucaipa, CA, where runners complete 4.16-mile loops until only one remains. The event, scheduled for December 2026, features a Krampus-themed challenge of endurance.

The Crystal Cove Trail Run concludes the 2026 SoCalTrail season with 15K, 6K, and kids' races on the scenic trails of Orange County. Runners receive a shirt, medal, breakfast, and access to a beer garden. The event features significant awar..

The Dirty December Trail Run will take place in San Diego on Sunday 20 December 2026. You can run between 10 and 42 kilometers.

A multi distance trail event in San Pasqual Valley near Escondido, CA offering races from a kids 1 mile to a 50 mile ultra. Finishers receive a shirt, medal and reusable cup and aid stations provide on course nutrition.

The Ranch 50k and half marathon take runners through the trails of Daley Ranch in Escondido, California. The 50k course features two loops with significant elevation, while the half marathon offers a single challenging loop. All participant..