Trail Running calendar near San Marcos 2025-2026

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 Black Star Canyon 5k Trail Run is an exciting running event taking place in Silverado, California, on June 11, 2025. The race features a scenic 5k course that includes fire roads and single-track trails, with an elevation gain of 390 feet. Participants can expect one aid station providing water..

The Holcomb Valley Trail Run, taking place on June 14, 2025, offers participants a chance to experience the scenic beauty of Big Bear Lake, California, along the Pacific Crest Trail. Runners can choose from three distances: 33 miles, 14 miles, or 7 miles. The event, now in its 28th year, serves as a..

The Orange Curtain Endurance Run is a premier running event taking place on June 20-21, 2025, in Cerritos, California. Participants can choose from various distances, including 100K, 50K, marathon, 30K, 10K, and 24-hour races. The course features a flat, out-and-back design along a bike path, making..

The Elevate Ultra Running Retreat is an immersive weekend experience designed for both novice and experienced ultra runners, taking place in the scenic Big Bear Lake, CA. Participants can expect over 50 miles of supported group training runs, technical clinics led by seasoned ultra runners, and oppo..

The Black Mountain Trail Races, set in San Diego, offers a thrilling experience for runners of all levels with three race distances: 50K, 25K, and half marathon. Participants will navigate the scenic and challenging trails of Amat Kwanyil, an area rich in history and natural beauty, featuring rocky..

The Whiting Ranch Trail Races, set in the scenic Whiting Ranch Wilderness Park in Trabuco Canyon, California, offers a variety of race distances including 6k, 10k, half marathon, and 30k. Participants can enjoy challenging climbs and breathtaking views while navigating the beautiful trails of the Sa..

The Red Rock Wilderness Trail Run is a scenic 5k event taking place in the beautiful Red Rock Wilderness area, specifically at the Augustine Staging Area in Silverado, California. The course features a mix of fire roads and single track trails, with an elevation gain of 300 feet. Participants can ex..

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 an exhilarating trail running event featuring a 50K, marathon, and half marathon, set against the stunning backdrop of Cuyamaca Peak in San Diego County. Participants will experience challenging climbs and descents, with the 50K and marathon routes featuring a significant elevation gain..

The Harding Hustle is an exciting trail running event set in the scenic Cleveland National Forest of Orange County, California. Participants can choose from three challenging distances: 50K, 30K, and 15K, all of which traverse the Harding Truck Trail, offering stunning views and steep climbs. The ev..

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 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 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 Gypsum Canyon Wilderness 5k is a trail running event set in the scenic Gypsum Canyon Wilderness in Anaheim, California. Participants will navigate a 5k course featuring fire roads and single track trails, with an elevation gain of 350 feet. The race includes one aid station providing water and e..

The Noble Canyon 50K and 15K is an annual trail running event held in the scenic mountains of east San Diego, California. Scheduled for September 6, 2025, the race features a challenging course primarily consisting of runnable single-track trails, offering participants stunning views of the natural..

That's No Moon Ultras is a challenging trail running event set in the scenic Cleveland National Forest and Santa Ana Mountains in Southern California. Participants can choose from three distances: 50 miles, 50K, and 30K, all featuring demanding courses with significant elevation gains and technical..

The Cuyamaca 100K is an endurance running event set in Cuyamaca Rancho State Park, located about an hour east of San Diego, California. The course features three distinct loops, starting and ending at Camp Cuyamaca, with minimal backtracking. The first loop spans 31.5 miles and includes a climb to C..

The HOKA Kodiak Ultra Marathons by UTMB is a thrilling two-day running event set in the picturesque mountain town of Big Bear Lake, California. Participants can choose from five different race distances, each offering a unique experience through diverse landscapes, including high desert and sub-alpi..