Trail Running calendar near Simi Valley 2025-2026

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, taking place on March 8, 2025, is a celebrated running event featuring a marathon, 10K, and 5K races. Known as California's oldest trail marathon, it offers participants stunning views and breathtaking trails across Catalina Island. The event promotes sustainability wit..

The OC Trail Runners Group Run is a free, social, and non-competitive event taking place at El Moro and Laguna Coast Wilderness Park in Newport Beach. Participants can enjoy a scenic 7.5-mile trail run with approximately 1100 feet of vertical gain, featuring various routes each time. The event empha..

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 held in Santa Barbara, California. 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, rocky trails with limited suppor..

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 challenging distances: 35 miles and 17 miles, catering to various skill levels. This event emphasizes the beauty of the Cal..

The VALENCIA Trail Race, scheduled for March 22, 2025, offers an exciting opportunity for runners to experience the stunning trails and challenging hills of Valencia, California. Participants can choose from three race distances: a 50K Ultra, a Half Marathon, and a 10K. The course features singletra..

The Pasadena Trail Running Challenge, organized by Pasadena Running Company, is a series of trail running events set to kick off in 2025. Participants can choose between two distances: a 5-mile and a 10-mile challenge, both designed to explore the scenic trails of Pasadena and the surrounding Angele..

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 Nature Made Great Race is an annual running event held in Agoura Hills, California, featuring a variety of races including the Chesebro Half Marathon, Deena Kastor 5K, Old Agoura 10K, 15K Combo, and the Cronies Triple Stack Challenge. Celebrating its 40th anniversary on April 5, 2025, this event..

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, offering stunning ocean views as it ascends through switchbacks and descends into Sycamore Canyon, cul..

The Leona Divide is a premier running event taking place in Lake Hughes, California, featuring multiple race distances including 100 miles, 100 kilometers, 50 miles, 50 kilometers, and 30 kilometers. Scheduled for April 12, 2025, this event serves as a qualifier for the prestigious Western States 10..

The Las Virgenes Canyon Ultra Trail Races, scheduled for April 26, 2025, offers a variety of distances including 6K, 12K, 30K, 54K, and 84K, catering to both novice and experienced runners. Set in the scenic landscapes of Upper Las Virgenes Canyon in Southern California, participants can expect a ch..

The Aut2Run for Autism is a running 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 enhancing the lives of individuals..

Coyote Two Moon is an exciting running event scheduled for May 2-4, 2025, in the scenic Los Padres National Forest, Ojai, California. Participants can choose from various distances, including 100 miles, 100K, 50K, 30K, and 10K, each featuring significant elevation gains. The event is designed for ex..

The Run4Kids Ultra Running Party is an exciting running event taking place in Corona, California, featuring a variety of challenges for participants. Scheduled for May 2-3, 2025, the event includes multiple race options such as 6-hour, 12-hour, 24-hour, marathon, 50-mile, and 100-mile distances. Thi..

The John Wayne Grit Series - Newport Coast is a running event that features 50K, 25K, and 5K races set against the stunning backdrop of Crystal Cove State Park in Laguna Beach, California. Participants will experience challenging hill climbs and breathtaking ocean views while supporting the John Way..

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 Mt. Wilson Trail Race, one of California's oldest trail races, takes place in Sierra Madre, featuring an 8.6-mile course that ascends to Orchard Camp and back, with an elevation gain of over 2,160 feet. The race is open to participants aged 14 and older, including high school teams and a Kids Fu..