Trail Running calendar near San Marcos 2026-2027

A self supported trail run in San Diego on 20 February 2027. Participants follow an unmarked single loop of about 51 miles with no aid stations and limited resupply points along the route.

Trail running at Goodman Ranch Sycamore Canyon Preserve near San Diego with solo and relay options over 100K, 50K and a half marathon. Organized by Dirty Feet Productions; solo 100K entrants require prior 50K or longer completion.

A multi-distance trail event on Catalina Island in Avalon on March 13, 2027, featuring a marathon, 10K, 5K and a kids run. The 49th annual edition is California's State Off-Road Marathon Championship and includes a Triple Crown challenge.

A trail race weekend in Anza Borrego Desert State Park on March 13, 2027, offering 50K, marathon, and half marathon courses with aid stations and on-site campground facilities. Participants receive a tech shirt and a finisher medal.

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 is a mud obstacle event over scrubland and motor-cross terrain. Race options include 15 plus km, 5 to 8 km, Infinity laps, spectator access, and group packages.

An outdoor obstacle event at Lake Elsinore Raceway on March 20, 2027, offering multiple distances including 5 to 8 km and 15 plus km, Infinity laps, named obstacles, finisher medal, shirt, headband, and a finisher drink.

Coast to Crest in Del Mar features out-and-back 10K and 5K courses on hard-packed dirt with minimal elevation and a downhill finish. Wide lagoon views and possible osprey sightings accompany a fast, groomed trail that doubles as a champions..

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 offers obstacle course racing with a 5 km Sprint featuring 20 obstacles and a 10 km Super with 25 obstacles, plus kids races and spectator options.

Oriflamme 50K on April 10 2027 is an out and back trail race that drops from the Pacific Crest Trail into desert canyons before a long climb back. The event is limited to 150 runners and features stocked aid stations and finisher medals.

Trail races at Noli Indian School on the Soboba Reservation offer marathon, half marathon, 5k and kids 3k options with Native and Open divisions. The event is limited to 100 entrants and includes finisher awards and early T shirts.

A 100-mile trail endurance race in the Mount Laguna area using Pacific Crest, Noble Canyon and Lake Cuyamaca trails. The event is a Western States qualifier, is cupless, and requires volunteer hours or a TrailFit donation.

A scenic 5k at Whittier Narrows Park with live mariachi and banda music, water stations, chip timing, and a post-race festival featuring tacos, a beer for 21+, a medal, and a t-shirt.

A self-supported marathon on May 8, 2027 in San Diego at Canyonside Park Driveway, organized as a memorial by Best Runner Leaves No Tracks. The counter-clockwise course passes Torrey Pine North with restroom and water access; no official ai..

Trail event at Crystal Cove State Park on May 8, 2027 with 50K, 25K and 5K routes on dirt roads and single track, ocean views, participant shirt and finisher mug, supporting the John Wayne Cancer Foundation.

A two-day Spartan weekend at Big Bear Mountain Resort featuring Sprint, Super and Beast obstacle races at high altitude, plus a kids race and spectator options. The layout includes long climbs and descents and a Trifecta opportunity.

O'Neill Park Trail Races in Trabuco Canyon, California, feature multiple trail distances on May 15, 2027. Registration opens December 1, 2026 and the event has a no-refund policy with rollover options if canceled for weather or fire.

A scenic trail run at Snow Summit in Big Bear Lake, featuring flowy singletrack, technical climbs and descents, Southern Sierra views, wildlife, wildflowers, and a Trail 10K distance on May 16, 2027.