Trail Running calendar near Simi Valley 2025-2026

The OC Trail Runners Group Run is a social, non-competitive event taking place at El Moro and Laguna Coast Wilderness Park in Newport Beach. Scheduled for January 18, 2025, participants can enjoy a relaxed atmosphere while running approximately 9K with a vertical gain of about 760 feet. The event em..

The Sean O'Brien event, taking place in Calabasas, CA, offers a range of challenging trail races including 100K, 50 Mile, 50K, Marathon (26.2 miles), and 30K on January 25, 2025. This event is notable as the 100K serves as a qualifier for the prestigious Western States 100. Participants can expect s..

The Mt. Hollywood 12K Trail Run Hike is an exciting outdoor event taking place in Griffith Park, Los Angeles, on January 26, 2025. Participants can choose from various distances, including a 12K trail run/hike, an 8K run, a 5K challenge, and a kid's 2.2K run.The event offers stunning views of the Ho..

The Boney Mountain Trail Run is an exciting running event set in the stunning Santa Monica Mountains, starting at Rancho Sierra Vista | Satwiwa National Park. Participants can choose between a challenging half-marathon course featuring creek crossings, single-track climbs, and breathtaking ocean vie..

The Boney Half Marathon is an exciting trail running event set in the stunning Santa Monica Mountains, starting at Rancho Sierra Vista/Satwiwa National Park. Participants can expect a challenging course featuring creek crossings, single-track climbs, and breathtaking ocean views. This race is part o..

The Field N Dale 6K & 12K Run at Panorama Vista Preserve is an exciting trail running event set to take place in Bakersfield, CA. Participants can choose between a flat and fast 6K course suitable for both runners and walkers, or a challenging 12K trail run that features climbs and single-track path..

The Griffith Park Trail Marathon is a celebrated running event taking place in Los Angeles, California, featuring multiple race distances including a 50K, marathon, 30K, half marathon, and 10K. This year marks the 15th anniversary of the "Spring Edition," promising an exciting experience for partici..

The Catalina Island Marathon, 10K, and 5K is a celebrated running event taking place on March 8, 2025, in Avalon, California. This marathon is known for its stunning views and challenging trails, making it a unique experience for participants. The event includes various race distances: a full marath..

The Singletrack Stampede is an exciting cross-country running event featuring 10K and 22K distances, designed for runners of all skill levels. Set on the scenic Millenium Loop Trail, participants will navigate twists, turns, and challenging switchbacks while enjoying breathtaking views of the Las Vi..

The Nine Trails 35 Mile Endurance Run is a challenging trail running event set to take place in Santa Barbara, California, on March 15, 2025. This demanding course features over 10,000 feet of elevation gain and descent, making it comparable to a tough 50-mile run. Participants will navigate steep, ..

The Gabrielino 50K is a challenging trail running event scheduled for March 15, 2025, designed for ultrarunners seeking a low-key endurance experience. The course, limited to 15 participants, starts at Lizzie's Tavern in Sierra Madre and includes a climb to Mt. Wilson, followed by a descent to the G..

The Santa Barbara Nine Trails is a trail running event organized by AllWeDoIsRun, set in the scenic landscapes of Santa Barbara, California. Participants can choose between two distances: a challenging 35-mile course and a shorter 17-mile option. The event is designed to cater to trail running enthu..

The VALENCIA Trail Race, set in the scenic hills of Valencia, California, offers an exhilarating experience for trail running enthusiasts. Participants can choose from three distances: a 10K, half marathon, or a challenging 50K ultra. The course features stunning singletrack trails that ascend to pe..

The Pasadena Trail Running Challenge is an exciting event organized by Pasadena Running Company, featuring 5-mile and 10-mile trail courses. Set in the scenic Hahamongna Watershed Park, participants can explore the beautiful interconnected trails of Pasadena and the Angeles National Forest. This eve..

The Rock It in El Moro Canyon 6K & 10 Miler, presented by Fitness on Fire, is an exciting trail running event set in the scenic El Moro Canyon, Laguna Beach, CA. Participants can choose between a 6K or a 10-mile course, featuring challenging climbs and breathtaking views of the Pacific Ocean. The ev..

The Chesebro Half Marathon is a premier trail race set in the scenic Santa Monica Mountains National Recreation Area, Agoura Hills, California. This USATF-sanctioned event features a unique course that combines both trail and road running, offering participants breathtaking views as they navigate th..

The Point Mugu Trail Run is an exciting springtime event held at Point Mugu State Park, featuring a challenging Half-Marathon and a scenic 10k trail race. The course begins at the Ray Miller Trail, showcasing stunning ocean views and a mix of ascents and descents, including a demanding climb on the ..

Leona Divide is an exciting running event taking place in Lake Hughes, California, featuring multiple race distances: 100 miles, 100 kilometers, 50 miles, and 50 kilometers. Scheduled for April 12, 2025, this event serves as a qualifier for the prestigious Western States 100 Mile Endurance Run. Part..

The Las Virgenes Canyon Trail Races, taking place on April 26, 2025, in Southern California, offers a variety of distances including 6K, 12K, 30K, 54K, and 84K. This event, formerly known as the Ahmanson Ranch Trail Races, is organized by Anytime Runners, LLC, and promises a scenic and challenging e..

The Aut2Run for Autism is a fundraising event scheduled for April 27, 2025, featuring multiple race options including a 15K, 10K, 5K, 1-Mile, Fun-K, and a virtual race. This annual event supports the Autism Society of Ventura County, with all proceeds directed towards improving the lives of individu..