Trail Running Calendar California 2025-2026

The Into the Wild OC Trail Run is a 5K trail race held at Saddleback Wilderness in Orange, California. The course features a mix of fire roads and single-track trails with an elevation gain of 300 feet, offering a moderately challenging run through natural terrain. Participants will find one aid sta..

The Mount Madonna Challenge, held in Gilroy, California, is a historic trail running event featuring a half marathon, 10K, and 5K races. Known for its challenging elevation gains—2,828 feet for the half marathon, 1,532 feet for the 10K, and 843 feet for the 5K—the race courses offer a rigorous test..

Bear Creek is a trail running event held in Lafayette, California, featuring a half marathon, 10K, and 5K distances. The races take place on August 9, 2025, through the scenic Briones Regional Park. The courses are known for their challenging hills rather than being flat or fast, offering runners be..

The Pinecrest Run is an annual running event held in Pinecrest, California, set in the scenic Sierra Nevada mountains. Celebrating its 49th year, the event features a 5-mile recreational run that winds through the roads of Pinecrest and along the shores of Pinecrest Lake, offering beautiful natural..

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..

South Bay 24 is an endurance running event held at Montgomery Waller Community Park in San Diego, featuring a 1.25-mile loop course that includes trail, grass, and bike path surfaces. The event offers multiple race options including a 24-hour race, 12-hour day and night races, a 6-hour race, and a h..

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 Almaden Hills Trail Run - Summer is a challenging trail running event held at Almaden Quicksilver Park in the scenic Almaden Valley, San Jose, California. The course features a mix of 60% dirt roads and 40% single-track trails with significant hills, offering runners beautiful countryside views...

The Tamalpa Headlands 50K is a challenging ultramarathon held annually in Marin County, California, starting and finishing at Santos Meadow near Muir Woods. Covering a 50-kilometer single-loop course, it features approximately 6,500 feet of elevation gain across iconic trails such as Coastal, Miwok,..

The Bulldog Ultra, held in Malibu Creek State Park, Calabasas, CA, is Southern California's oldest 50k trail race, celebrating over 30 years. Scheduled for August 16, 2025, it offers two distances: a challenging 50k ultra with 29.4 miles and 5,784 feet of elevation gain, and a 25k trail run covering..

The Double Dipsea is a challenging 13.7-mile trail race held annually at Stinson Beach, California, celebrating its 55th edition in 2025. The course follows the legendary Dipsea Trail from Stinson Beach to Mill Valley and back, featuring steep hills, numerous stairs, and stunning scenic views. Known..

The Envirosports Angel Island Half Marathon & 10K is an annual race held at Angel Island State Park near Tiburon, California. The event features a scenic, hilly loop trail that circumnavigates Angel Island, offering stunning panoramic views of the Golden Gate Bridge, San Francisco, Alcatraz Island,..

The Trail Run at Sly Park - Summer is a scenic trail running event held at the Sly Park Recreation Area in Pollock Pines, California, within the El Dorado National Forest. The race offers multiple distances including 5K, 10K, 8 Mile, Half Marathon, 17 Mile, Trail Marathon, and a 50K ultra. Courses w..

The Santa Cruz Trail Run, hosted by Inside Trail Racing, takes place at Henry Cowell Redwoods State Park in Felton, California. This scenic event offers three distances: 10K, Half Marathon, and 30K, featuring challenging courses through giant redwoods, twisting single-track trails, fire roads, and a..

Run-de-Vous is a multi-distance running event held at Harvey Bear Ranch Park in San Martin, California. Scheduled for August 29, 2025, it offers a variety of race options including a marathon, 50K, 50-mile, 100K, 100-mile, and a 4-person 50-mile relay. The course is a fast 2-mile loop set against sc..

The SPASM Crystal Springs Trail Run is an exciting running event taking place in Huddart Park, Woodside, CA. Scheduled for August 31, 2025, it features multiple race distances including an 8K, Half Marathon, 35K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. Participa..

The Mount Baldy Run to the Top is a challenging 7-mile trail race held in Mount Baldy, California. Celebrating its 60th running, the race starts at 6,000 feet elevation and ascends to the summit of Mt. Baldy at 10,064 feet, featuring a steep 4,000-foot elevation gain.This iconic Southern California..

The Gypsum Canyon Wilderness 5k is a trail running event held at Gypsum Canyon Wilderness in Anaheim, California. The 3.3-mile course features a mix of fire roads and single-track trails with an elevation gain of 350 feet, offering a moderately challenging run through natural terrain. Participants w..

The Noble Canyon 50K and 15K is an annual trail running event held in the scenic mountains of east San Diego, California, specifically in Pine Valley. The races take place on runnable single-track trails within National Forest land, offering participants stunning views and challenging terrain. The e..

The Mendocino Running Festival, held in Mendocino Woodlands Park, California, offers a unique running experience amidst ancient redwoods and scenic trails. Participants can choose from a 10K, half marathon, or timed 6- and 12-hour races on a challenging 6-mile loop featuring single-track trails, log..