Trail Running calendar near Arlington Heights 2025-2026

The Into the Wild OC Trail Run is a 5K trail race held at Saddleback Wilderness in Orange, California. The course features a mix of fire roads and single-track trails with an elevation gain of 300 feet, offering a moderately challenging run through natural terrain. Participants will find one aid sta..

The Bulldog Ultra, held in Malibu Creek State Park, Calabasas, CA, is Southern California's oldest 50k trail race, celebrating over 30 years. Scheduled for August 16, 2025, it offers two distances: a challenging 50k ultra with 29.4 miles and 5,784 feet of elevation gain, and a 25k trail run covering..

The Mount Baldy Run to the Top is a challenging 7-mile trail race held in Mount Baldy, California. Celebrating its 60th running, the race starts at 6,000 feet elevation and ascends to the summit of Mt. Baldy at 10,064 feet, featuring a steep 4,000-foot elevation gain.This iconic Southern California..

The Gypsum Canyon Wilderness 5k is a trail running event held at Gypsum Canyon Wilderness in Anaheim, California. The 3.3-mile course features a mix of fire roads and single-track trails with an elevation gain of 350 feet, offering a moderately challenging run through natural terrain. Participants w..

That's No Moon Trail Races take place in the rugged Cleveland National Forest and Santa Ana Mountains near Silverado, California. The event offers challenging trail runs in three distances: 50 miles, 50K, and 30K. Participants navigate demanding courses with significant elevation gains, exposed ridg..

The Double Peak Challenge is a distinctive running event held in San Marcos, California, featuring a challenging 10K race, a 5K fun run, and a Kids Trail Trot. The 10K course is known for its demanding elevation gain of 1,176 feet, culminating at Double Peak's summit at 1,558 feet, offering runners..

J Treequinox is a 12-hour ultra running event held on a private 20+ acre desert property near downtown Joshua Tree, California. The race features a 1-mile loop course, making it accessible for runners new to ultra distances who can take the challenge one lap at a time. Participants enjoy a well-stoc..

No Name 5025 is a trail running event held at Cheeseboro National Park in Woodland Hills, California. It features a challenging 50k ultramarathon, along with a half-marathon, 5k, and a kids’ 2k fun run. The course offers diverse terrain, including runnable ascents, winding singletracks, steep fire r..

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 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 HOKA Kodiak Ultra Marathons by UTMB take place in Big Bear Lake, California, a rustic mountain town near Los Angeles. This two-day festival features five race distances ranging from 10.4 km to 159.3 km, including 10K, 21K, 50K, 100K, and 100M events. Runners experience diverse landscapes and cli..

The Cahuilla Rez Ultra is a unique running event held on the Cahuilla Indian Reservation in Anza, California. It offers multiple race distances including a 100-mile ultra, 24-hour, 12-hour, 6-hour, and a half marathon. The course features a 2-mile loop on double track dirt roads with moderate elevat..

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 Encinitas Beach Run, presented by Excelerace, is a unique running event held at Moonlight Beach in Encinitas, California. Scheduled for October 25, 2025, the race takes place on the sand at low tide between Moonlight Beach and Grandview. Participants can choose between 5k and 10k distances, with..

Caspers Trail Races, held in San Juan Capistrano, California, offer a variety of distances including 10K, 13.2 miles, 30K, marathon, and 50K. This Orange County event features well-marked and well-supported trail courses, promising a great running experience. Participants can expect quality race swa..

Machete Trail Madness 200 is an ultramarathon event held at Lake Perris, California, featuring challenging distances of 100 miles, 50 miles, and 10 miles. The course consists of a tough 10-mile loop with 2,300 feet of elevation gain per lap, offering scenic views of the lake and surrounding mountain..

The Wildwood Canyon Trail Run takes place in Wildwood Canyon State Park, Yucaipa, California, featuring a scenic 3.6-mile loop course with nearly 600 feet of vertical gain per loop. Participants have 8 hours to complete as many loops as possible, showcasing the park's rugged canyons, meadows, and oa..

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..