Trail Running Calendar California 2026-2027

A seven‑week series of Tuesday night fun runs in Redding from July 14 to August 25, 2026, with two distance options each week and a single punch card that covers all seven events.

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.

A five-week summer cross country series at College of the Canyons in Valencia, running Thursday evenings from July 16 to August 13, 2026. Main races cover three miles and a kids race takes place on the Cougar Stadium track.

Trail races on the Harding Truck Trail in the Santa Ana Mountains offering 50K, 30K and 15K courses with significant elevation gain, aid stations, required shuttle access and typically hot July conditions.

Tough Mugu is a coastal mountain trail running event at Point Mugu State Park on July 18, 2026 offering a 25k and shorter course options. The event includes chip timed results, a finisher medal and race tee, and a cash prize for the 25k pod..

Hot to Trot offers 5k, 10k, 15k and a half marathon in Griffith Park on July 18, 2026. Routes run on a hard packed dirt horse trail with an aid station at the turnaround and free parking at Crystal Springs Picnic Area.

Bad Bass at Lake Chabot Marina in Castro Valley on July 18, 2026 features a paved 5K, a mixed-surface 10K and a mostly fire-trail half marathon with marked routes and stocked aid stations.

Trail runs on Mt. Tam near Stinson Beach with 10K, Half, and 30K options across technical trails and major elevation changes; cupless aid stations, chip timing, and a 300-runner field.

A Better World Running presents Rockin' Summer at Whittier Narrows on July 19, 2026 with 5k, 10k, 15k and half marathon options on marked park loops, featuring aid station support, finisher medals, photos, live results, and on-site registra..

An endurance event at Montgomery Waller Park in San Diego on July 24, 2026, held on a 1.22 mile loop of trail, grass and bike path. Timed events run from six hours to 24 hours, plus a social run and a half marathon option.

A trail event in Downieville, California with 25K, 50K, and 100K options on mostly singletrack. Courses include multiple aid stations, substantial elevation gain, and specific equipment and pacer rules for the 100K.

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.

Trail runs of 50K, 30K and 10K take place on the Great Shasta Rail Trail near McCloud, CA on July 25, 2026. The out-and-back course is relatively flat with aid stations, post-race meal and finisher medal.

Trail endurance races at Point Pinole Regional Shoreline offering 12 hour, 6 hour and 3 hour options for individuals or teams of two or three. The 3.37 mile loop runs mostly on dirt fire trails with shoreline views and eucalyptus groves.

A 12.5 mile point to point mountain trail race on Donner Summit near Soda Springs California. The course includes four summits, about 3,300 feet of elevation gain, shuttle transportation and a unique finisher item.

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.

Trail running at Calero County Park with multiple distances across single track and dirt paths, significant climbs, aid stations and free parking at the park.

A free, social, non-competitive trail group run on July 25, 2026 in Newport Coast, CA. The route is about 6.5 miles with roughly 1,000 feet of gain on hilly, rocky trails; participants should have trail experience and bring hydration.

A trail race in Auburn CA on July 26 2026 offering 10.5 and 5.9 mile courses through single track, canal sections and dirt roads with views of the American River Canyon. Organized by Fleet Feet Sacramento Trail Challenge.

A 135 mile invitational ultramarathon from Badwater Basin in Death Valley to Whitney Portal near Mt. Whitney. Runners cover desert and mountain terrain with a 45 hour limit and must be supported by a single vehicle crew.