Trail Running calendar near Borrego Springs 2025-2026

The Pacific Crest Trail 50 (PCT 50) is a challenging 50-mile ultramarathon held in the Cleveland National Forest, California. The out-and-back course primarily follows single-track trails along the Pacific Crest Trail in east San Diego County, featuring rugged terrain with rocky sections and signifi..

The O'Neill Park Trail Races is a scenic trail running event held in Trabuco Canyon, California, featuring various race distances including 10K, half-marathon, 30K, 50K, and marathon. The race showcases the stunning natural beauty of O'Neill Park, a treasured location in South Orange County. Partici..

The Corral Canyon Trail Scramble is a trail running event held in the Cleveland National Forest near Campo, California. Taking place on May 17, 2025, it offers multiple race distances, including 5 miles, 9 miles, 14 miles, and a 50K ultramarathon. The courses feature rocky terrain, sandy sections, a..

The Proctor Valley Monster Endurance Run is a challenging 60-kilometer race set in the rugged terrain of Southern California. Participants will face a grueling course featuring 11,000 feet of elevation gain and 10,000 feet of descent, designed to test their endurance and mental fortitude. The event..

The Gorgonio View Trail Run, part of the Big Bear Trail Experience, takes place at the renowned Big Bear Mountain Resort in Southern California. This scenic 10K race offers participants the chance to traverse beautiful trails featuring smooth singletrack paths through high-altitude pine forests, alo..

The 1st Annual NATRO@Noli Indian School Trail Race takes place on the Soboba Indian Reservation in San Jacinto, California. This event offers marathon, half marathon, 5k, and kids 3k distances with Native and Open divisions. The marathon features a challenging two-loop 13.1-mile course with over 2,0..

The Lake Miramar 4 Mile Run, part of the Rewind Series by ERS, is a scenic, untimed fun run held near sunset at Lake Miramar in San Diego, CA. The 4-mile out-and-back course features a mix of paved roads and trails along the lake’s picturesque shoreline, offering a varied and enjoyable running exper..

The San Diego 100 is a challenging 100-mile ultramarathon set in the scenic mountains of San Diego County, California. Scheduled for June 6, 2025, the race features a loop course primarily on single-track trails, including sections of the Pacific Crest Trail and various state parks. Participants fac..

The Holcomb Valley Trail Run is an annual event held in Big Bear Lake, California, featuring three race distances: 33 miles, 14 miles, and 7 miles. Participants run along the scenic Pacific Crest Trail and forest roads through historic Holcomb Valley, known for its gold rush history. The race promot..

The Black Mountain Trail Races in San Diego, CA, offer challenging trail running events across three distances: 50K, 25K, and half marathon. Participants will navigate rugged, technical trails through historic and scenic areas, including Black Mountain, an ancient extinct volcano with diverse wildli..

Elder Creek Night Runs is an exciting running event set in the beautiful desert landscape of Anza, California, under a full moon. Participants can choose from various distances, including 50K, 30K, 13 Miler, and 9 Miler, all on a scenic 4.6-mile looped course featuring single track trails and dirt r..

The Peak is a challenging trail running event held near Julian, California, featuring 50K, marathon, and half marathon distances. The course primarily follows single-track trails with stunning mountain views, including a climb to Cuyamaca Peak, the second highest point in San Diego County. Runners f..

The Riley Park Trail Races is a family-friendly event held at Thomas F. Riley Wilderness Park in Orange County. The race offers various distances, including a 30k, half marathon, 10-miler, 10k, Riley Park 6-hour, and 5k, catering to runners of all levels.Participants can enjoy scenic single and doub..

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..

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 Noble Canyon 50K and 15K is an annual trail running event held in the scenic mountains of east San Diego, California. The race features mostly runnable single-track trails with stunning views and challenging terrain. The 50K race begins early in the morning, with a 9.5-hour cutoff, while the 15K..

The Double Peak Challenge is an annual outdoor running event held in San Marcos, California, featuring a 10k, 5k, and Kids Trot. Participants enjoy scenic views and a challenging course that ascends to the summit of Double Peak at 1,558 feet. The event includes a competitive 10k race, a fun 5k run,..

J Treequinox is a 12-hour ultra running event held on a private 20+ acre desert property near downtown Joshua Tree, California. The race features a 1-mile loop course, making it accessible for runners new to ultra distances who can take the challenge one lap at a time. Participants enjoy a well-stoc..

The Cuyamaca 100K is an ultramarathon held in Cuyamaca Rancho State Park near Julian, California, about an hour east of San Diego. The race features a challenging course composed of three distinct loops starting and ending at Camp Cuyamaca. The first loop covers 31.5 miles on the park's western side..

The Kodiak Ultra Marathons by UTMB is a multi-day trail running event held in Big Bear Lake, California, offering a variety of race distances, including 100 miles, 100K, 50K, 21K, and 10K. The race features stunning views of Big Bear Lake and traverses diverse landscapes such as high desert, sub-alp..