Trail Running Calendar California 2026-2027

A 100-mile ultramarathon in Burney, California on June 19-20, 2026, organized by Intermountain Endurance. The event follows a cupless aid station policy and the organizer offers free registration to Indigenous runners.

Broken Arrow Skyrace is a multi day mountain running event at Palisades Tahoe offering distances from a kids race to a 46K, technical high alpine terrain, field limits on select races, and prize money for elite divisions.

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.

A cupless trail race in the Susan River Canyon featuring a loop from Hobo Camp that uses the Bizz Johnson Trail outbound and flowy South Side singletrack on the return. Three distances are offered and all finishers receive a towel and medal..

Tough Topanga is a SoCalTrail trail race at Topanga State Park offering 15k, 10k, a non-timed Hiker's Delight and a kids 1k, with marked singletrack and fire-road routes, aid stations, prize purses and festival amenities.

Trail races of 52k, 34k and 10k take place in the Klamath Mountains west of Mount Shasta City, California. Courses include mountainous single-track loops and a lakeside 10k with staffed aid stations and a post-race meal.

Trail distances at Fort Ord National Monument near East Garrison, CA, traverse rolling hills, fields of wildflowers, single-track, sandy hills and fire roads. Courses are newly designed and differ from the winter Fort Ord Trail Runs.

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 in Del Mar. The **3 mile** out and back on groomed trail is limited to 250 participants and includes a throwback shirt and medal from past ERS races.

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 community relay on Auburn trails with 100 one mile legs and a separate 100 mile virtual challenge completed over 25 days, both offering tracking options and a finisher item for virtual participants.

Live and virtual options at Lake Chabot feature 5K, 10K, and a half marathon with multiple aid stations, on-course nutrition, race apparel and a woodallion, post-race beverages, and a brewfest atmosphere.

A trail event on June 26, 2026 in Olympic Valley that starts at the Western States 100 line, runs around High Camp, and includes a kids 100.2 m dash. The day finishes with an after party at High Camp Lodge and live music.

The Western States 100 mile Endurance Run takes place June 27 to 28, 2026, running from Olympic Valley to Auburn over 100.2 miles with large elevation changes, mountain passes, a river crossing, and time based buckle awards.

A weekend camping and trail event in Pearblossom, CA that raises funds for Chingonas on the Run. Participants attempt a six hour loop challenge on singletrack around Mount Hillyer with aid at a central basecamp.

A mountain trail event at Mt. Shasta Ski Park on June 27, 2026, offering three courses from 4 to 15 miles, professionally timed with fully supported aid stations and on-site Community Day activities.

A public movement-style running event at Islay Hill Park and online offering a 5.5 mile loop plus timed 2, 4, and 6 hour events, with live results, an official tee, and a post-run ceremony that publicly acknowledges finishers.

A free, social, non-competitive trail run in Newport Coast on June 27, 2026, featuring an approximately 5.7 mile hilly route with rocky sections and about 760 feet of gain. Participants should have prior trail running experience.

Muddy Dash San Diego on June 6, 2026 is a noncompetitive 5K with obstacles, mud pits and slides at Barona Oaks Motocross Park, followed by an after party with music, food trucks and drinks. Value and VIP registration options are available.