Trail Running calendar near Borrego Springs 2026-2027

A Spartan obstacle weekend at Lake Elsinore Raceway features Sprint 5K, Super 10K, kids races, and multi-hour Hurricane Heat events on rugged, open terrain near a large natural freshwater lake.

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.

An ultramarathon in Cuyamaca Rancho State Park near Julian, CA featuring three distinct loops over varied terrain. The course reaches Cuyamaca Peak near 6500 feet and includes a stretch along the Pacific Crest Trail.

A two day trail festival in Big Bear Lake, California featuring five distances and varied terrain around the lake. The 2026 event is the UTMB World Series Americas Major and serves as a dual qualifier for UTMB Finals and Western States.

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.

The Peak offers 50K, marathon and half marathon courses that climb Cuyamaca Peak via single-track trails, with aid stations at Sweetwater and Cuyamaca Peak and GPS course files provided. Registration opens April 1, 2026.

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.

Trail individual races at Los Coyotes Reservation October 23-24, 2026 offering a 3.1 mile Yellow Loop and timed 6 hour and 24 hour ultras on desert and mountain trails, with camping and festival-style amenities at Ragnar Village.

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.

Run an 8-hour loop course on a scenic 3.7-mile trail in Wildwood Canyon State Park. The event features an aid station, vendors, and live music. An after-party follows at a local brewery.

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.

Trail race in the Pine Creek Wilderness on a wide dirt fire road with an uphill out and downhill return, offering a half marathon and a 10 km option and parking at Horsethief Canyon Trailhead.

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.

This 21 mile trail run near Yucaipa is postponed from September 2026. The challenging course features over 4,300 feet of climbing on Crafton Hills terrain, with aid station support.

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..

Trail races of Half Marathon, 10K and 5K take place at Black Mountain in San Diego on November 28, 2026. Courses run on dirt with hill climbs and technical sections and the field is limited to 300 runners.

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.