Trail Running Calendar California 2024-2025

The Euchre Bar Massacre is a challenging trail run taking place on Saturday, October 12, 2024, at Giant Gap Campground in Foresthill, CA. Participants can choose between a 25-mile or 50-mile fatass style run along the North Fork of the American River, featuring significant climbing and off-trail sec..

The Ruth Anderson Memorial Endurance Run is an ultra-distance trail run taking place in San Francisco, CA. The race features a mostly flat, certified 4.48-mile loop around Lake Merced with approximately 100' of elevation gain and loss per loop. There is one aid station per loop and runners have acce..

The trail run takes place on October 19, 2024, starting at Castle Rock park in Walnut Creek and heading into Mount Diablo State Park. There are 5K, 10K, half marathon, and 30K courses, all on dirt trails. The 30K course has a time limit of 6.5 hours, with on-course cut-offs at specific aid stations...

The No Name 5015 trail run, presented by SoCalTrail, offers a challenging and high-quality trail running experience in Cheeseboro Canyon, Agoura, California. Participants can choose between a 15K and a 50K option, both featuring diverse terrain including ascents, singletracks, fire road climbs, and ..

The California Fall Classic 100K and 55K trail run will take place on Saturday, October 19, 2024, at Lake Sonoma in Healdsburg, CA. The 100K race is a Western States Endurance Run 2024 Qualifier with an 18-hour cutoff time, while the 55K is recommended as a first ultra. The courses offer stunning vi..

The Cahuilla Rez Ultra is a unique trail run held on the Cahuilla Indian Reservation in Anza, California. Participants can choose from a 100 Miler, 24-hour race, Half Marathon, or 12-hour race. The event serves as a fundraiser for the tribe's Youth and Family Programming, offering runners a chance t..

The Grit Series Run at Lone Pine, taking place on October 19, 2024, offers a challenging course through the Alabama Hills National Scenic Area with dirt roads, single track trails, hills, and stunning views of Mt. Whitney. This event supports the John Wayne Cancer Foundation, contributing to cancer ..

The California Gold Rush Trail Run - Fall takes place in the Marshall Gold Discovery State Historic Park in Coloma, CA, where gold was discovered in 1848. The event offers a variety of distances including a Half Marathon, 15K, 10K, 5K, Mile, and Kids Run. The courses consist of single track dirt tra..

The 3rd annual SAMO Trail Runs will take place on Saturday, October 19, 2024, starting at Will Rogers State Park and going through the Santa Monica Mountains to Topanga State Park and back. The race offers distances of 50 miles, 50k, 30k, and 22k (heavy half) with a stunning course. Registration ope..

The Fleet Feet Fall Classic - Trail is a trail running event taking place on October 22nd, 2023 in Chico, CA. The event offers two races: a half marathon and a 4-mile endurance challenge. The races will take place in Upper Bidwell Park, starting on the south side of the park and following single-tra..

The Heart of Cool Trail Run offers three race options: a 5K, 10K, and Half Marathon, as well as a Virtual Runner option. The event takes place on October 20, 2024, in Cool, California. Prices vary for each race and increase after September 5, 2024. The trail run is open to participants aged 110 and ..

The Pasadena Running Company presents the 2024 Pasadena Trail Half & 5K/10K on Sunday, October 20th. The event offers three distance options: 5K, 10K, and Half Marathon, showcasing the best and toughest trails for experienced trail runners. Runner perks include a race shirt, commemorative medal, goo..

The Oakland Hills Trail Run takes place in Redwood Regional Park and EBMUD Trails in Oakland, CA. The event offers three distances: 10K, Half Marathon, and 35K. The course winds through a beautiful forest of coast redwoods and includes evergreens, chaparral, and grasslands. The race has a 6.5-hour t..

The Trail Run at Sly Park - Fall offers various distances including a 50K, Trail Marathon, 17 Miler, Half Marathon, 8 Miler, 10K, and 5K. The event takes place at the Sly Park Recreation Area in Pollock Pines, CA, surrounded by pine trees and horse trails. The race is held under a special use permit..

The Range of Light Trail Races in Bishop, California, offers 50k, 33k, 10k, and 5k distances, showcasing the best trail and dirt road running in the Eastern Sierra. The event benefits the Inyo County Search and Rescue team and features well-stocked aid stations and beautiful scenery. The 5k and 10k ..

The Quicksilver Trail Challenge is an annual trail running event organized by the Quicksilver Running Club in San Jose, California. It features a half marathon, a 10k race, and a kids' 1-mile fun run, taking place in late Summer or early Fall at Almaden Quicksilver County Park. The event offers a ch..

The Twilight's Last Gleaming Cross Country Challenge is an annual evening trail run held on the last Saturday in October, starting at 4 p.m. The race is known for its low entry fee and minimal organization, focusing on providing a fun and athlete-friendly experience. The course is described as chall..

The Island View Trail Run offers 4, 10, and 16-mile race options, taking place in Carpinteria, CA. The trail winds through Franklin Canyon with stunning ocean views and climbs to the top of the Santa Ynez Mountains. Runners must have completed a 10-mile trail run in the last six months to participat..

The Machete Trail Madness offers a unique experience with its Dia De Los Muertos 100 Miler, 50 Miler, and 10 Miler races. The event takes place at Lake Perris trails, featuring a challenging 10-mile loop with 2,200 feet of elevation gain per lap. Participants can enjoy beautiful views of the lake an..

The Almaden Hills Trail Run - Fall offers a variety of distances ranging from 5K to 50K, set in the scenic Almaden Quicksilver park in San Jose, CA. The course consists of 60% dirt roads and 40% single track, providing a challenging yet enjoyable trail running experience with hilly terrain and beaut..