Trail Running calendar near Green Valley Lake 2026-2027

A high-country trail event in the Angeles National Forest on May 30, 2026, offering 50k and 21k courses across Pacifico Mountain with multiple aid stations, a finish festival, awards and Sterling Silver Tickets for top 50k 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.

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 multi day trail running weekend in Big Bear Lake from June 12 to 14, 2026 featuring a TransRockies style three day stage race and single day events from a Vertical Stage to 33 miles with notable elevation gain.

Phoenix Rising is a multi distance trail race in Griffith Park Los Angeles offering 5k, 10k, 15k and a half marathon on marked out and back and loop courses. The event includes aid stations, finisher medals and free photos.

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.

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 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 weekend fundraiser in Pearblossom that pairs camping with a six hour looped trail challenge summiting Mount Hillyer, offering aid stations, meals, free photos and a finisher's medal in an inclusive women focused space.

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.

Multiple out-and-back races on a hard packed dirt horse trail in Griffith Park on July 18, 2026, offering 5k, 10k, 15k and half marathon distances, aid station support, finisher medals, free photos, and free parking at Crystal Springs Picni..

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.

Experience a unique desert night run under the Full Buck Moon on a scenic looped course. Choose between distances ranging from 9 miles to a 50k ultramarathon through manzanita groves and single track trails.

Aztlan XC Classic is a 5K event in Elysian Park, Los Angeles on July 25, 2026, with youth and adult race categories and differing registration options. Proceeds support the Aztlan Athletics Foundation's camps and scholarships.