Trail Running calendar near Brea 2025-2026

No Name 5025 is a trail running event held at Cheeseboro National Park in Woodland Hills, California. It features a challenging 50k ultramarathon, along with a half-marathon, 5k, and a kids’ 2k fun run. The course offers diverse terrain, including runnable ascents, winding singletracks, steep fire r..

The Cheeseboro Canyon Trail Run, held in Agoura, California within Cheeseboro Canyon National Park, offers a variety of trail running distances including a challenging 50K ultra marathon, a half marathon, a 5K trail run, and a new kids 2K fun run. The courses feature diverse terrain with runnable as..

The Bandit Ultra Trail is a premier trail running event held in Simi Valley, California, at Corriganville Park. Offering three race distances—50K, 30K, and 15K—the course traverses the scenic Rocky Peak area, known for its striking sandstone boulders, oak savannahs, and diverse wildlife habitats. Ru..

The Angeles National Forest Trail Race, celebrating its 20th anniversary, takes place in the scenic San Gabriel Mountains at Mt. Wilson, California. Offering two challenging distances, the 25K features 3,500 feet of elevation gain, while the 50K includes 7,000 feet, both starting and finishing at th..

The HOKA Kodiak Ultra Marathons by UTMB is a challenging alpine trail running event held in Big Bear Lake, California, a rustic mountain town near Los Angeles. The race spans two days with five distances ranging from 10.4 km to 159.3 km, featuring significant elevation gains up to 4100 meters. Runne..

Live Oak Odyssey is a trail running event held in O'Neill Regional Park, located in Trabuco Canyon, California. Participants can choose between 3-hour and 6-hour fixed-time runs on a scenic 2.75-mile loop course featuring about 500 feet of vertical gain per loop. The course offers a mix of terrain i..

The Cahuilla Rez Ultra is a unique running event held on the Cahuilla Indian Reservation in Anza, California. It offers multiple race distances including a 100-mile ultra, 24-hour, 12-hour, 6-hour, and a half marathon. The course features a 2-mile loop on double track dirt roads with moderate elevat..

The SPACEROCK Trail Race is an annual trail running event held at the iconic Vasquez Rocks Natural Park in Agua Dulce, California. Scheduled for October 18, 2025, it offers multiple race distances including a challenging Half Marathon+ (nearly 14 miles with over 3,200 feet of elevation gain), 15K, 1..

The Pasadena Trail Half Marathon, hosted by Pasadena Running Company, takes place at Hahamongna Watershed Park in Pasadena, California. This event offers three distance options: 5K, 10K, and a challenging half marathon. The half marathon course spans 13.1 miles with an elevation gain of 1,855 feet,..

The Encinitas Beach Run is a unique running event held at Moonlight Beach in Encinitas, California. Participants run on the sand at low tide along a scenic coastal course between Moonlight Beach and Grandview. The event offers 5k and 10k distances with turnaround options, plus a kids' 1k race for ch..

Caspers Trail Races, held in San Juan Capistrano, California, offer a variety of distances including 10K, 13.2 miles, 30K, marathon, and 50K. This Orange County event features well-marked and well-supported trail courses, promising a great running experience. Participants can expect quality race swa..

Machete Trail Madness 200 is an ultramarathon event held at Lake Perris, California, featuring challenging distances of 100 miles, 50 miles, and 10 miles. The course consists of a tough 10-mile loop with 2,300 feet of elevation gain per lap, offering scenic views of the lake and surrounding mountain..

The Wildwood Canyon Trail Run takes place in Wildwood Canyon State Park, Yucaipa, California, featuring a scenic 3.6-mile loop course with nearly 600 feet of vertical gain per loop. Participants have 8 hours to complete as many loops as possible, showcasing the park's rugged canyons, meadows, and oa..

The Griffith Park Trail Marathon is an annual trail running event held in Griffith Park, Los Angeles, featuring multiple race distances including a marathon, 50K, 30K, half marathon, and 10K. The marathon course is an out-and-back route showcasing a mix of scenic single-track trails and double-track..

The Catalina Island Half-Marathon & 10K is a scenic trail running event held in Avalon, California on Catalina Island. The half-marathon covers 13.1 miles, featuring challenging climbs through the island's rugged interior, including a run past the historic Wrigley Mansion and a descent through the W..

The 4 Mile Hill Challenge is an exciting running event scheduled for November 15, 2025, at the Audubon Center at Debs Park in Los Angeles, CA. This event features a scenic 4-mile course that includes rolling hills and all-trail paths, making it suitable for participants of all skill levels, from beg..

The Chino Hills Trail Run Series, held in Brea, California, offers trail running enthusiasts a range of distances including 10K, 10-mile, 15-mile, 20-mile, half-marathon, 30K, and a challenging 50K ultramarathon. Set within one of Orange County's premier natural open-space parks, the event features..

Boundiful Endurance Runs take place at Washburn Ranch in Hemet, California, featuring a one-mile loop on a 100% hardpacked dirt surface through a Southern California fruit and nut farm. The event offers multiple distances including 3, 6, 12, and 24-hour runs, a 100-mile solo challenge, and relay opt..

The Fremont Canyon 28k Trail Run is an exciting running event taking place in Irvine Regional Park, Orange, California. Scheduled for December 6, 2025, this challenging 28k (17.5 miles) course features fire roads with an elevation gain and loss of 2860 feet, making it suitable for experienced runner..

The Ray Miller 50/50 is a trail running event held at Point Mugu State Park in Malibu, California. Scheduled for December 6, 2025, the race offers three distance options: a 50-mile ultra, a 50K, and a 30K. Participants experience scenic terrain within the state park, known for its natural beauty and..