Trail Running Calendar California 2025-2026

Kiwanis River Run is held at George’s River Ranch on CA-41 in Fresno, California, along the San Joaquin River. The event offers four distances: 10K Trail Run, 5K Run/Walk, 2-Mile Fun Run/Walk, and a Kids 1/4 Mile Fun Run for ages 10 and under. Runners traverse three scenic off-road routes along the..

The event takes place in Silverado, CA, at 13333 Black Star Canyon Rd. It offers the following distances: 50 Mile 50K 30K Registration closes on Mon, Sep 15 at 11:59 PM PT. Race entries are non-refundable and non-transferable. Volunteer positions are available and include race credits and race sw..

Rebels XC Challenge is a cross-country running meet held in Carmichael, California, at 6700 Tarshes Drive. The event is scheduled for September 20, 2025, and offers three divisions: Women’s Race, Masters Men, and Open Men. Distances are not listed on the page, and course specifics aren’t described,..

J Treequinox is a 12-hour ultramarathon held near downtown Joshua Tree, California, on a private 20+ acre desert property. The race features a 1-mile loop course, allowing runners to pace themselves one lap at a time while enjoying the serene high desert environment. Participants pass through a well..

The Mt. Umunhum Marathon, Race to the Top and Down, is a challenging trail running event held in Almaden Quicksilver County Park, San Jose, California. This marathon features a rugged course that begins at the Hacienda Entrance and ascends to the summit of Mt.Umunhum, one of the prominent peaks in t..

The Kiwanis River Run takes place on Saturday, September 20, 2025, in Fresno, CA at George’s River Ranch (formerly Panoche Creek River Ranch), 8805 CA-41, Fresno, CA 93720. The event supports the Pediatric Trauma - Injury Prevention Program at Valley Children’s Hospital. Distances offered include:..

Gold Rush Growler Trail Runs at Granite Beach, Folsom Lake SRA, offer a 10-mile trail run and a 5K along the shoreline and trails. For 2025, the courses are new: the 5K starts at Granite Beach, to Oak Point and Old County, then returns on new and old trails; the 10-mile route starts at South Granite..

Double Peak Challenge in San Marcos, California is an outdoor 10K, 5K, and Kids Trail Trot that pulls local runners to ascend to the summit for panoramic North County views. The course starts at San Elijo Recreation Center Lower Field and gains about 1,176 feet to reach the Double Peak summit at 1,5..

The Great American Pizza Run takes place in Long Beach, California, at 5400 E Ocean Blvd, offering multiple pizza-themed distances: 5K (The Fast Slice), 10K (The Deep Dish Dash), Half Marathon (The Full Pie Half), 1-Miler (The Cheesy Mile), and a Kids Dash (The Little Mozzarella Sprint). The course..

Rocky Ridge is a trail race set in the Las Trampas Wilderness near San Ramon, California. The event offers a half marathon, a 10K, and a 5K through rugged hills and scenic vistas. The course is demanding and not beginner-friendly, rewarding perseverance with trails and views few runners will see, fo..

Chingona Fest Campout is a weekend trail-running and camping event in Pearblossom, California, held at a Group Campground in the Angeles National Forest. Titled “Chingonas on the Run: Camp & Loop,” the fundraiser invites participants to complete as many 4.16-mile loops as possible in six hours, with..

THE MAMMOTH is an ultramarathon held in Mammoth Lakes, California. The race is a permitted, self-contained loop through the Eastern Sierra, circumnavigating a 760,000-year-old caldera and linking small mountain communities. Runners pass alpine lakes, old mines, golden fall foliage, dense pines, the..

Ascot Hills Challenge 5K is a trail race at Ascot Hills Park in East Los Angeles. The event features a 3.1-mile trail course described as the best in East LA, suitable for runners, walkers, and hikers. Participants enjoy views of the city, including Dodger Stadium and the Hollywood sign, from within..

Angeles National Forest Trail Race takes place in Mt. Wilson, California, with start and finish at the Mt. Wilson Observatory.The event offers two ultramarathons: 25K (about 3,500 feet of elevation gain) and 50K (about 7,000 feet), routed through the San Gabriel Mountains. The course is described as..

Pacifica Summit Run, staged at San Pedro Valley State Park in Pacifica, California, features 10K and half-marathon trail races hosted by Urban Coyote Racing. Runners enjoy postcard views of the Pacific Ocean coastline and plenty of switchbacks as they ascend the summit on the upper San Francisco Pen..

The Bandit Ultra Trail is a premier trail running event held in Simi Valley, California, at Corriganville Park. Set against the scenic backdrop of Rocky Peak's mountains and steep canyons, the race offers stunning views of sandstone boulders, oak savannahs, and diverse wildlife habitats. Participant..

The Sunset & Cider Trail Races take place on September 27, 2025, in Auburn, California. The start and finish are at Ponderosa Cider Co, 102 Gum Lane, near Auburn Overlook Park. The event is presented by BAD LUCK RUN CLUB and is set on trails along the American River Canyon. 50K - two out-and-..

JP's Backyard Ultra/Hike is a grassroots ultramarathon and hike held at Skyline Wilderness Park in Napa, California. In its third year, the event features a 3.3-mile loop with 550+ feet of climbing through rocky and shaded trails. Runners and hikers may do 1 to 10 loops, starting together on the hou..

The Celebration of Life - Trail Trek takes place on September 27, 2025 in Willits, California at the Brooktrails Par Course - Nutmeg Trail parking lot. The event is held in partnership with the North Coast Striders and is presented as an annual community trek in memory of an individual named in the..

Ridge Rambler Half Marathon is held in Bridgeport, California, on the last Saturday of September. The point-to-point race starts at about 7,100 feet on the backside of Lower Twin Lakes, stays around the lake, then descends toward Buckeye Road (6,800 ft) before climbing the ridge to finish at 6,600 f..