Trail Running calendar near Irvine 2026-2027

Celebrate Halloween with a timed trail run at Crystal Cove State Park in Laguna Beach. Choose between a 4 hour or 6 hour endurance challenge set against a scenic coastal backdrop.

Trail races in Silverado, CA run out of Black Star Canyon with a marathon, a new 25k, a half marathon and a 10K. Routes follow creekside trails, switchbacks and ridge sections with multiple aid stations.

A six hour timed event on a 5 mile paved loop at Miramar Reservoir in San Diego, with chip timing, four aid stations and on course gear support. Participants may complete as many loops as they wish and receive T shirts medals and certificat..

A trail running event in Avalon, Catalina Island with a 13.1 mile half-marathon, a 10K, a 1K kids run, and a Triple Crown challenge offering coastal views and inland climbs.

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..

A multi-day trail endurance event on the Backbone Trail in Malibu covering about 70 miles and roughly 13,000 ft of elevation, with a 25 lb dry pack requirement and a 36-hour completion window.

Experience an obstacle course race at Oak Canyon Park featuring a 5 km course with over 15 obstacles and a Mini Monkey Run for kids. Enjoy a festive atmosphere with music, food, and free spectator access.

A Thanksgiving tradition in Santa Clarita Central Park. Choose between a hilly 5K cross country course or a 1K event for younger participants. Proceeds benefit local youth track and field programs.

A Thanksgiving morning trail event in the Santa Monica Mountains near Reseda offering a half marathon, 10k and 5k on fire roads and singletrack. Half marathon winners receive $500 each and entries include medals and race photography.

Celebrate Thanksgiving morning with a scenic 5K or 10K run along Huntington Beach to fund clean water projects for communities in need around the world.

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.

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.

Ray Miller 50/50 is a trail race at Point Mugu State Park in Malibu on December 5, 2026 offering 50 Miler, 50K and 30K distances. Registration opens April 1, 2026 at 6:00 AM PT and last year it sold out in a day.

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.

Trail races at Crystal Cove State Park in Laguna Beach offering 15K, 6K and a Kids 1K loop. The El Moro 15K features technical trail sections and a $2,000 prize purse, with shirts, finisher medals, free photos and post-race amenities.

Trail races at Daley Ranch in Escondido offer 5K, 10K and a 10 mile course that climbs Standley Peak for a 360 degree view. The event limits fields to 300 runners and lists varied elevation gain by course.

A holiday themed running event at Griffith Park offering 5k, 10k, 15k and half marathon distances on a shared dirt horse trail. The event includes on-course aid, finisher medals, photos, parking near the Merry Go Round and posted results.