Trail Running calendar near Anaheim 2026-2027

A multi-distance loop ultrarun at a private ranch in Riverside, CA, featuring one-mile laps, timed solo and relay options, free on-site camping, and awards for distance milestones over Memorial Day weekend.

The Mount Wilson Trail Race returns May 23, 2026 with the full 8.6 mile out-and-back from Kersting Court to Orchard Camp and back. The event includes a Kids Fun Run, a Kersting Court expo with food and community booths, and support for volu..

A one-day event at Hahamongna Watershed Park on May 24, 2026, offering a 50K team relay, a 50K solo ultramarathon, and a 10K Fun Run for solo participants.

Multiple looped trail distances from 5k to a half marathon at West Creek Park, Valencia on May 24, 2026, with aid stations each loop, finisher medals, goodie bags, free photos, and posted results.

A 5k trail run at Black Star Canyon in Silverado, California, with mixed fire road and single track, 390 ft elevation gain, one aid station, a cupless policy, and pre-run access restricted to authorized days.

A spring trail event in the Angeles National Forest offering a 50k and a half marathon across Pacifico Mountain with technical singletrack, multiple aid stations and a finish festival. The 50k awards Sterling Silver Tickets and a course rec..

Annual 5K and 10K run and walk in Rolling Hills Estates on May 30, 2026, with a scenic route on the city bridle trails and awards for overall and age-group first place finishers.

Free, social group run by Aravaipa at El Moro and Laguna Coast Wilderness Park in Newport Coast on May 30, 2026. The route is about 5.5 miles with roughly 500 feet of ascent, some rocky sections, and post-run snacks and a raffle.

Malibu Canyon Trail Races at Point Mugu State Park in Malibu, CA on June 6, 2026 offers trail distances from a half marathon to 100K. The event is sold out with a waitlist and has volunteer shifts that can be traded for a free KHraces entry..

The City of Fullerton’s inaugural Fullerton Fit 5K Trail Run takes place June 6, 2026 on a dirt course near Brea Dam, accompanied by a Health & Wellness Fair with vendors, demonstrations, and food trucks.

An unsanctioned, route-choice run in Chino Hills on June 6, 2026 covering more than 4 miles over gravel and trail. Runners navigate four checkpoints on an open course and compete for cash prizes.

Experience a scenic trail race through the iconic landmarks of Griffith Park in Los Angeles. Choose between a five person marathon relay or an individual 8K loop featuring live music and full course support.

A three day TransRockies style stage race and single day trail races in Big Bear Lake on June 12 to 14, 2026, featuring distances from 5 to 33 miles with substantial elevation gain and courses pending USFS approval.

Phoenix Rising on June 13, 2026 offers 5k, 10k, 15k and a half marathon on hard packed horse trails in Griffith Park, with marked out and back routes, an aid station at the turnaround, and finisher medals.

A second annual running event at the Old Los Angeles Zoo area on June 14, 2026, offering a half marathon and a 12K on relatively flat, scenic trails. Registration runs November 21, 2025 to January 26, 2026 with fees from $49.

Los Mugrosos 5K in South El Monte on June 14, 2026 features a scenic single loop trail and a kids dash for ages 2 to 12. The main 5K includes a shirt and finisher medal and is limited to 90 runners.

Orange Curtain Run in Orange County, California offers a range of distance and timed events from 10K to 100K on mixed pavement and bike path surfaces. The event is scheduled for June 19 and 20, 2026 and includes a certified marathon.

A supported trail event at Topanga State Park offering 10k and 15k races, a non-timed Hiker’s Delight, and a kids 1k, with marked singletrack and fire road routes, aid stations, chip timing, and a timed Downhill Mile cash bonus.

Nixon 5K for Title IX on June 20, 2026 in Yorba Linda features a 5K and a 1K kids run along El Cajon Trail. The family-friendly event includes commemorative medals, race bibs, a 5K race shirt, and a Nixon Library admission.

A free, untimed community trail run on August 26, 2026 at San Andreas Staging Lot in Del Mar, CA. The 3 mile out and back on groomed trail includes a vintage ERS shirt and medal and is limited to 250 participants.