Trail Running Calendar California 2025-2026

The Calero Hills Trail Fest is an exciting trail running event held at Calero County Park in San Jose, CA. Participants can choose from various distances, including a marathon, 30K, half marathon, 10 miler, 10K, and 5K. The course features challenging ascents and descents through scenic landscapes,..

Mountain Tiger Donner Summit is an exciting 11-mile point-to-point mountain trail race set in the stunning Donner Summit area of Tahoe, California. Designed for both new and experienced runners, the course features a mix of singletrack, technical trails, and smooth fire roads, with a total elevation..

The Great Shasta Rail Trail is an exciting running event taking place in McCloud, California, featuring multiple race distances including 50K, 30K, Burro 30K, Burro 10K, and 10K. The course is relatively flat and offers beautiful views of Mt. Shasta, making it ideal for both beginners and experience..

The Folsom 100 is an exhilarating 100-mile ultramarathon that takes place around Folsom Lake, California. Scheduled for August 1, 2025, this challenging race features a point-to-point course with a single out-and-back section. Participants have 34 hours to complete the loop, which includes stunning..

The Angeles Crest 100 Mile Endurance Run, established in 1986, is a prestigious ultramarathon that traverses the scenic San Gabriel Mountains in California. This challenging point-to-point race covers a diverse terrain with elevations ranging from 1,135 to 9,300 feet, offering participants a unique..

The Point Mariah Trail Marathon, hosted by the Donner Party Mountain Runners, will take place on August 2, 2025, in Soda Springs, California. This scenic marathon features a unique multi-loop course that showcases the stunning Royal Gorge area, offering breathtaking views of the Granite Chief Wilder..

The Rodeo Valley Trail Run, taking place on August 2, 2025, in the scenic Marin Headlands of Sausalito, CA, offers a variety of race distances including 8K, Half Marathon, 30K, and 50K. The course features challenging terrain with steep climbs and descents, providing stunning views of the Pacific Oc..

The Riley Park Trail Races, set in the scenic Thomas F. Riley Wilderness Park in Coto de Caza, CA, offers a variety of race distances including a 30k, half marathon, 10 miler, 10k, and 5k, as well as a unique 6-hour challenge. This family-friendly event promises a fun and challenging experience with..

The Green Valley Lake Half Marathon, along with 5K and 10K events, is scheduled for August 2, 2025, in the scenic San Bernardino Mountains. Participants will enjoy a picturesque course that begins with a flat loop around the lake, followed by a gradual ascent with a 400-foot elevation gain, offering..

The Skyline 50K Endurance Run is one of California's oldest and most celebrated 50K races, taking place annually in August at Lake Chabot Marina in Castro Valley. This event is designed for both novice and experienced ultrarunners, featuring a scenic course that loops through the East Bay Regional P..

The Saddleback Wilderness 5k Trail Run is an exciting running event set in the scenic Saddleback Wilderness, located in Orange, California. Scheduled for August 6, 2025, this race features a 5k course that includes both fire roads and single-track trails, with an elevation gain of 300 feet. Particip..

The Mount Madonna Challenge is an annual running event held in Gilroy, California, featuring a half marathon, 10K, and 5K races. Established in 1975, the event promotes trail running and supports local high school athletes through scholarships. The South Valley Running Club initially managed the rac..

Bear Creek 2025 is an exciting running event taking place in Lafayette, California, featuring a Half Marathon, 10K, and 5K races. Set against the scenic backdrop of Briones Regional Park, participants can expect a challenging course with hills, perfect for those seeking a unique trail experience rat..

The Pinecrest Run is an annual running event taking place in Pinecrest, California, featuring a scenic five-mile course along the roads and shores of Pinecrest Lake, as well as a quick one-mile race on pavement. This event serves as a fundraiser for the Pinecrest Expedition Academy, a local private..

The SAR Wild Run is a family-friendly fundraising event for the Fresno County Search and Rescue team, set in the scenic Sierra landscape of Shaver Lake, California. Participants can choose from various events, including a Trail Half Marathon, 10K Trail Run, 5K Wild Run, and a 2-mile hike, as well as..

The South Bay 24 is an exciting endurance event taking place at Montgomery Waller Community Park in San Diego. This annual race features a 1.25-mile loop course that combines trail, grass, and bike path terrain. Participants can choose from various race options, including a 24-hour, 12-hour, 6-hour,..

The Almaden Hills Trail Run is a summer event taking place in Almaden Quicksilver Park, San Jose, CA. Participants can choose from various distances, including 5K, 10K, 8 Mile, Half Marathon, 30K, Trail Marathon, and 50K. The course features a mix of 60% dirt roads and 40% single track, offering cha..

The Redwood (Summer) Trail Run is an exciting running event taking place in Oakland, California, featuring a variety of race distances including a 5-mile run, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. The course winds through the scenic Redwood..

The Tamalpa Headlands 50K is a challenging ultramarathon set in the stunning Marin County, California, featuring iconic trails such as Coastal, Miwok, and Dipsea. Established in 1998 and presented by the Tamalpa Runners, this single-loop race offers approximately 6,500 feet of elevation gain, combin..

The Bulldog Ultra is a renowned trail running event taking place in Malibu Creek State Park, California, on August 16, 2025. Celebrating its 32nd year, it features two challenging courses: a 50k ultra and a 25k trail run, both offering stunning views of the Santa Monica Mountains and the ocean. Part..