Trail Running calendar near Oceanside 2026-2027

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.

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.

A free social, non-competitive group run in Newport Coast on May 30, 2026, organized by Aravaipa and OC Trail Runners. The route is about 5.5 miles with 500 feet of gain, includes rocky sections, and finishes with snacks and a raffle.

A 50 mile out and back on the Pacific Crest Trail in Cleveland National Forest on June 6, 2026, featuring mostly single track, rocky sections, and about 7,500 feet of elevation gain, with multiple staffed aid stations and specified crew rul..

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.

A family friendly 5K mud run at Barona Oaks Motocross Park in San Diego on June 6, 2026. The course features mud pits, obstacles, and slides and the day includes a Pre Party and an After Party with music and food trucks.

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 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 trail race at Black Mountain in San Diego with 50K, 25K and a half marathon on June 20, 2026. The event follows Trail Sisters guidelines and features aid stations staffed by ham radio experts.

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.

A 5k trail run at Gypsum Canyon Wilderness on June 24, 2026 over fire roads and single track with about 350 ft of elevation gain. One aid station at mile 2.2 and a cupless race policy.

A mountain 5k up Mt. Baldy Resort on July 11, 2026, with about 1,500 feet of gain and steep singletrack early on. Finishers reach the Top of the Notch for a BBQ, live music, and a technical trucker hat.

Into the Wild is a 5k trail run at Saddleback Wilderness on July 15, 2026, over fire roads and single track with 300 ft of elevation gain. Entry is limited to 150 runners and there is no race day registration.

Trail race in Cleveland National Forest near Silverado, CA, with 50K, 30K and 15K out-and-back routes on the Harding Truck Trail, substantial elevation gain, staffed aid stations, mandatory shuttle access and hot-weather conditions.

Out and back loop races at Whittier Narrows on July 19, 2026 include 5k, 10k, 15k and a half marathon. Registration features medals, photos, and results posted within 12 to 24 hours.

A loop based endurance event at Montgomery Waller Community Park offering 24 hour and shorter timed races plus a HEFFTY half marathon. The course mixes trail, grass and bike path and provides oncourse aid and runner campsite facilities.