Trail Running calendar near Irvine 2025-2026

Totally 80's Fast Times in Huntington Beach, organized by CaliFlow Runs, offers a throwback festival-style race weekend at Bolsa Chica State Beach (Lot 25) in Huntington Beach, CA. The event features three distances—5K, 10K, and Half Marathon—plus a Kids Dash. Runners enjoy a flat, scenic, car-free..

That's No Moon Trail Races, held in Silverado, California, runs through the Cleveland National Forest and the Santa Ana Mountains. Distances include 50 Mile, 50K, and 30K on rough remote terrain—single-track trails and forest roads with significant elevation and exposed ridges. Expect demanding clim..

Double Peak Challenge in San Marcos, California is an outdoor 10K, 5K, and Kids Trail Trot that pulls local runners to ascend to the summit for panoramic North County views. The course starts at San Elijo Recreation Center Lower Field and gains about 1,176 feet to reach the Double Peak summit at 1,5..

The Great American Pizza Run takes place in Long Beach, California, at 5400 E Ocean Blvd, offering multiple pizza-themed distances: 5K (The Fast Slice), 10K (The Deep Dish Dash), Half Marathon (The Full Pie Half), 1-Miler (The Cheesy Mile), and a Kids Dash (The Little Mozzarella Sprint). The course..

Chingona Fest Campout is a weekend trail-running and camping event in Pearblossom, California, held at a Group Campground in the Angeles National Forest. Titled “Chingonas on the Run: Camp & Loop,” the fundraiser invites participants to complete as many 4.16-mile loops as possible in six hours, with..

Angeles National Forest Trail Race takes place in Mt. Wilson, California, with start and finish at the Mt. Wilson Observatory.The event offers two ultramarathons: 25K (about 3,500 feet of elevation gain) and 50K (about 7,000 feet), routed through the San Gabriel Mountains. The course is described as..

The Bandit Ultra Trail is a premier trail running event held in Simi Valley, California, at Corriganville Park. Set against the scenic backdrop of Rocky Peak's mountains and steep canyons, the race offers stunning views of sandstone boulders, oak savannahs, and diverse wildlife habitats. Participant..

Ascot Hills Challenge 5K is a trail race at Ascot Hills Park in East Los Angeles. The event features a 3.1-mile trail course described as the best in East LA, suitable for runners, walkers, and hikers. Participants enjoy views of the city, including Dodger Stadium and the Hollywood sign, from within..

Palos Verdes Trails 5K is a residence of ernie Howlett Park on the Palos Verdes Peninsula, CA, offering a 5K through Palos Verdes trails. The course features eucalyptus shade and well‑groomed horse trails over gently rolling hills, delivering a nature‑driven, invigorating experience. The atmosphere..

Mount Wilson Trail 5K Recovery Run is a road 5K and a Kids Fun Run held in Sierra Madre, California, at Kersting Court. The 2025 event moves to Saturday, October 4, featuring vendor booths at Kersting Court, a photo booth, and a beer garden to celebrate Octoberfest. The race aims to unite the commun..

Located in Big Bear Lake, California, HOKA Kodiak Ultra Marathons by UTMB offers a two-day festival vibe in a rustic mountain town near Los Angeles. The event features five races: 100M (160 km, 5200 m gain), 100K (100 km, 3050 m), 50K (50 km, 1500 m), 21K (20 km, 600 m), and 10K (10 km, 280 m). Cour..

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..

The Rock It in Chino Hills 5K & 10K is a trail running and hiking event held at Chino Hills State Park in Brea, California. Participants can choose between a 5K or 10K course that showcases the park's stunning and expansive trails, offering scenic views and a tranquil outdoor experience. The race in..

Live Oak Odyssey is a fixed-time trail run held at O’Neill Regional Park in Trabuco Canyon, California. It offers 3- and 6-hour options on a 2.75-mile loop with about 500 feet of vertical gain per lap, challenging runners with a mix of ups and downs, single-track, and double-track sections. The wood..

Rnnr FAT ASS 6 Hour in Redlands, California, offers a self-paced endurance challenge on a scenic two-loop course through San Timoteo Canyon. The event is described as unofficial timed, with a central clock but runners tracking their own miles, and participants may race for up to six hours. The atmos..

Lake Hodges Trail Festival is an annual trail-running weekend at the Piedras Pintadas Trailhead near Lake Hodges in San Diego County, and is part of the Elevation Culture Race Series. The festival offers multiple distances: 50K, 25K, 15K, 10K, 5K, a stroller-friendly Stroller Trail 5K, and a Kids 1..

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..

SPACEROCK Trail Race takes place at Vasquez Rocks Natural Area Park in Agua Dulce, California. The event offers four distances: Half Marathon+ (roughly 13.9 miles with about 3,200 feet of elevation gain and descent), 15K (14.3K), 10K, and 5K. The courses mix technical single-track with rocky climbs..

Race of Legends XC is a cross-country running event held in Los Angeles, California (zip 90065). The race offers a 5K Run, described on the organizer’s site as a "People's race," suggesting an inclusive, community vibe. The event takes place at or near 1900 N San Fernando Rd in Los Angeles, aligning..

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,..