Trail Running calendar near Descanso 2025-2026

Noble Canyon 50K/15K is an ultramarathon set in the mountains east of San Diego, California, near Pine Valley. The event offers two distances—50K and 15K—run on National Forest land. The course is described as mostly runnable single-track, delivering rugged terrain, spectacular mountain views, and a..

Double Peak Challenge is an outdoor trail race in San Marcos, California, offering a 10K competitive option, a 5K Fun Run, and a Kids Trail Trot. The course starts at the San Elijo Recreation Center and climbs to Double Peak Summit, delivering about 1,176 feet of elevation gain to reach 1,558 feet a..

Chupacabra 8 mile/25K night trail run, organized by Imperial Valley Running Events, takes place in Imperial, California, with the start near Interstate 8 and Dunaway Road in Ocotillo. The race offers two distances – an 8-mile option and a 25K – run as a desert night trail through the Yuha Desert in..

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 100-kilometer course composed of three distinct loops starting and ending at Camp Cuyamaca. The first loop covers 31.5 miles on the park'..

Set in Gonzales Canyon Open Space in Carmel Valley, San Diego, the Carmel Valley Trail Race offers trails through scenic open space with rugged climbs. The 12th annual event starts and finishes at Solana Ranch Park in Gonzales Canyon, featuring three distances: 15K, 10K, and 5K. The 15K and 10K rout..

Live Oak Odyssey is a fixed-time trail running event held at O'Neill Regional Park in Trabuco Canyon, California. Participants choose between 3-hour and 6-hour races on a scenic 2.75-mile loop featuring approximately 500 feet of vertical gain per lap. The course offers a mix of uphills, downhills, s..

Set on the Cahuilla Indian Reservation in Anza, California, Cahuilla Rez Ultra is a Native‑organized fundraiser for the tribe’s Youth and Family Programming. Runners can choose from a 100‑mile option, 24, 12, and 6‑hour races, a half marathon, and a Tribal Member 5k. The course is a scenic 2‑mile lo..

2025 Encinitas Beach Run, presented by Excelerace, is a one-of-a-kind sand run at Moonlight Beach in Encinitas, California. The event takes place on the beach between Moonlight Beach and Grandview at low tide, starting west of the palm tree in front of Moonlight Beach and heading north along a sceni..

Casper's Trail Races on Oct 25, 2025, take place in San Juan Capistrano, California, offering trail distances: 10K, 13.2 miles, 30K, marathon, and 50K. The event, hosted by KHraces, aims for a well-supported, well-marked experience with swag, highlighting Orange County’s fall trail atmosphere. While..

The Machete Muertos 200 is an ultramarathon event held at Lake Perris, California, featuring multiple race distances including 10, 20, 50, 100, and 200 miles, plus a 20-mile ruck division. The course consists of challenging loops with significant elevation gains—2,300 feet per lap for shorter distan..

The Roosters Backyard Ultra will take place in San Diego on Saturday 1 November 2025.

The Mount Laguna Trail Marathon, held in Mount Laguna, California, is a well-organized Southern California trail race featuring a challenging single-loop course of technical single-track trails. The marathon covers rolling terrain with a total elevation gain of 3,358 feet. The first half of the cour..

Situated at Miramar Reservoir in San Diego, the Sri Chinmoy 6-Hour Race challenges runners to a 5-mile loop around the lake. The mostly flat, clockwise course has four aid stations for fuel and encouragement. Gear storage is available near the main staging area at the dam on the lake’s west end; lap..

The RD Trail Half Marathon will take place in Tijuana on Sunday 16 November 2025. You can run between 10 and 21 kilometers.

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 race options including 3, 6, 12, and 24-hour runs, a 100-mile solo challenge, and relay..

Black Mountain Turkey Burner is a trail race held at Black Mountain Ranch Park in San Diego, California (14700 Carmel Valley Rd). Runners can choose from the Half Marathon (13.0 miles), 10K (6.4 miles), 5K (3.7 miles), and a Kids Dash. All races start and finish at Black Mountain Community Park. The..

Anza Borrego Cuyamaca 50 Mile Run is a point-to-point ultramarathon covering 50 miles from the Sunrise Trailhead near Julian, California, to Stagecoach Trails RV Resort & Campground. The course climbs to Stonewall Peak, winds through wooded trails near a lake, then descends into Oriflamme Canyon and..

The Keepin' It Rural will take place in San Marcos on Sunday 7 December 2025. You can run between 5 and 10 kilometers.

Dixon Lake 10/10 Trail Race takes place in Escondido’s Daley Ranch, starting at El Caballo Park and sending runners onto rugged Daley Ranch trails up to Stanley Peak for a 360-degree panoramic view. The event offers two main distances: 10-mile and 10K (with a 5K option noted in some listings), with..

The Dirty December Trail Run, held in San Diego, California, is a festive holiday trail running event featuring multiple race distances: a full marathon, half marathon, 10K, and a unique 6-hour hill climb challenge. The course includes significant elevation gains—approximately 3,500 feet for the mar..