Trail Running calendar near Irvine 2025-2026

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..

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 k..

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..

Live Oak Odyssey at O'Neill Regional Park is a fixed time trail run with 3 Hour and 6 Hour loop options on oak studded single track. Expect challenging climbs, stocked aid station, chip timing and finisher awards for a fun day on the trails..

Event overview The Carmel Valley Trail Race takes place on October 11, 2025, at Gonzales Canyon Open Space in Carmel Valley, San Diego. The 12th annual event starts and finishes at Solana Ranch Park on the east end of Gonzales Canyon, with..

Run under star filled skies on the Cahuilla Reservation in Anza, CA, with distances from 6 hours to 100 miles and a half marathon. This Native organized fundraiser for tribal youth features a scenic 2 mile loop, camping and a peaceful mount..

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 plac..

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 5..

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 mil..

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, 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 co..

Event overview The 2025 Encinitas Beach Run is presented by Excelerace and takes place on Sunday, October 19, 2025, at Moonlight Beach in Encinitas, California. The course runs on sand at low tide between Moonlight Beach and Grandview. The..

No Name is an ultra trail race hosted by SoCalTrail, held in Cheeseboro Canyon at Cheeseboro National Park near Agoura, California. The event offers three distances: a 50k, a Half-Marathon, and a 5k trail run. The course weaves through dive..

Tackle scenic singletrack and steep climbs at the No Name Trail Races in Chesebro Canyon, Agoura CA on October 25, 2025. Choose from a 50k, half marathon or 5k and celebrate with tacos, a beer garden and post race awards.

Caspers Trail Races in San Juan Capistrano on Oct 25, 2025 offers scenic trail courses with options for every level. The race is sold out but a waitlist is open; expect marked routes, course support and event swag for finishers.

Event overview OC Trail Runners Group Run takes place on Saturday, October 25, 2025 in Newport Coast, California. The run is free, social and non-competitive, described as slower-paced and take-it-easy. The stated goal is to spend time outd..

Monster Dash : Irvine, October 26, 2025 The event takes place at Bill Barber Memorial Park in Irvine on Sunday, October 26, 2025. Distances offered: 5k 10k 15k Half marathon Course, rules and logistics The course is an open route on a sha..

Machete Muertos 200 Dia De Los Muertos Ultra hits Lake Perris Oct 29 to Nov 2 2025 with distances from 10 miles to 200 miles. Expect rugged scenic loops, a festive Day of the Dead vibe, camping and on course aid.

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

Race through iconic Griffith Park on single track trails up to the Hollywood sign, with distances from 10K to 50K to suit all trail runners. Expect stunning city views, well stocked aid stations, and a welcoming morning race atmosphere.