Trail Running calendar near Simi Valley 2025-2026

The Cheeseboro Canyon Trail Run, held in Agoura, California within Cheeseboro Canyon National Park, offers a variety of trail running distances including a challenging 50K ultra marathon, a half marathon, a 5K trail run, and a new kids 2K fun run. The courses feature diverse terrain with runnable as..

The Bandit Ultra Trail is a premier trail running event held in Simi Valley, California, at Corriganville Park. Offering three race distances—50K, 30K, and 15K—the course traverses the scenic Rocky Peak area, known for its striking sandstone boulders, oak savannahs, and diverse wildlife habitats. Ru..

The Angeles National Forest Trail Race, celebrating its 20th anniversary, takes place in the scenic San Gabriel Mountains at Mt. Wilson, California. Offering two challenging distances, the 25K features 3,500 feet of elevation gain, while the 50K includes 7,000 feet, both starting and finishing at th..

The SPACEROCK Trail Race is a unique trail running event held at the iconic Vasquez Rocks Natural Park in Agua Dulce, California. Scheduled for October 18, 2025, it offers multiple race distances including a challenging Half Marathon+ (nearly 14 miles with over 3,200 feet of elevation gain), 15K, 10..

The Pasadena Trail Half Marathon is a premier running event hosted by Pasadena Running Company, featuring challenging routes that highlight the scenic trails of Pasadena. Scheduled for October 19, 2025, this event offers three distance options: a Half Marathon, 10K, and 5K, catering to runners of al..

The Twilight's Last Gleaming Cross Country Challenge will take place in Ventura on Saturday 25 October 2025.

The Griffith Park Trail Marathon is a scenic trail running event held in Griffith Park, Los Angeles, starting at the Merry-Go-Round Lot 1. The marathon features an out-and-back course that includes a mix of beautiful single-track trails and double-track fire roads, with a highlight being the summit..

The Catalina Island Half-Marathon & 10K is a scenic trail running event held in Avalon, California on Catalina Island. The half-marathon covers 13.1 miles, starting in Avalon and passing the historic Wrigley Mansion before entering the island's rugged interior with challenging climbs. Runners are re..

The 4 Mile Hill Challenge is an exciting running event scheduled for November 15, 2025, at the Audubon Center at Debs Park in Los Angeles, CA. This event features a scenic 4-mile course that includes rolling hills and all-trail paths, making it suitable for participants of all skill levels, from beg..

The Fremont Canyon 28k Trail Run is an exciting running event taking place in Irvine Regional Park, Orange, California. Scheduled for December 6, 2025, this challenging 28k (17.5 miles) course features fire roads with an elevation gain and loss of 2860 feet, making it suitable for experienced runner..

The Ray Miller 50/50 is a trail running event held at Point Mugu State Park in Malibu, California. Scheduled for December 6, 2025, the race offers three distance options: a 50-mile ultra, a 50K, and a 30K. Participants experience scenic terrain within the state park, known for its natural beauty and..

The Crystal Cove Trail Run, held at Crystal Cove State Park in Laguna Beach, California, offers a scenic and challenging trail running experience just minutes from the beach. The event features three distances: a 15K, a 6K, and a Kids 1K race. Both the 15K and 6K courses include fire road climbs, ri..

The Hanukkah 8 Krazy Kilometers is an annual family-friendly running event held at Panorama Vista Preserve in Bakersfield, California. Participants can choose between an 8K race and a 2K Latke Loop Fun Run/Walk, both set on scenic trails along the Kern River Parkway. The event celebrates Hanukkah, t..

The Paramount Ranch Trail Runs, held in Agoura Hills, California, offer a variety of race distances including a 50K, marathon, 30K, half marathon, and 10K. Set against the scenic backdrop of Paramount Ranch, the event features well-loved trails that showcase the natural beauty of the area. The cours..

The Sean O'Brien 100K is a trail running event held in Calabasas, California, offering multiple race distances including 100K, 50 miles, 50K, marathon, and 30K. The 100K race serves as a qualifier for the Western States 100. The course features scenic trail views with notable vantage points around m..

The Catalina Island Marathon, held annually in Avalon, California, is the oldest trail marathon in the state and serves as California’s State Off-Road Marathon Championship. The event features multiple race distances including a full marathon (26.2 miles), 10K, 5K, and a kids' run. The course runs t..

The Santa Barbara Nine Trails is a trail running event held in Santa Barbara, California. It offers two race distances: 35 miles and 17 miles, providing options for different levels of trail runners. The event is part of the AllWeDoIsRun series, known for creating trail running events on the scenic..

The Nine Trails 35 Mile Endurance Run is a trail running event held in Santa Barbara, California. It offers two distance options: a challenging 35-mile course and a shorter 17-mile route. The race takes place on scenic trails that showcase the natural beauty of the Santa Barbara area, providing runn..

The Billy Goat Mountain Climb is a challenging trail running event held in Silverado, California, within the scenic Cleveland National Forest. It offers three race distances: a 17-mile run, a half marathon, and a 10K, catering to various levels of trail runners. The course features rugged mountain t..

The Nature Made Great Race is an annual running event held in Agoura Hills, California, near Los Angeles. Celebrating over 40 years, it features multiple race distances including the Chesebro Half Marathon, Old Agoura 10K, Deena Kastor 5K, and a 1-mile fun run. The half marathon course offers scenic..