Trail Running calendar near Arlington Heights 2025-2026

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..

Boundiful Endurance Runs take place at Washburn Ranch in Hemet, California, featuring a one-mile loop on a 100% hardpacked dirt surface through a Southern California fruit and nut farm. The event offers multiple distances including 3, 6, 12, and 24-hour runs, a 100-mile solo challenge, and relay opt..

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 Anza Borrego Cuyamaca 50 Mile Run is a point-to-point ultramarathon held in Julian, California, showcasing some of San Diego’s most scenic trails. Covering 50 miles, the course begins at the Sunrise Trailhead, ascends Stonewall Peak, traverses wooded trails near a lake in Cuyamaca Rancho State P..

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 Keepin' It Rural will take place in San Marcos on Sunday 7 December 2025. You can run between 5 and 10 kilometers.

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 Dixon Lake Trail Race, held annually at Daley Ranch in Escondido, California, offers runners scenic trail runs with distances of 10 miles, 10K, and 5K. Starting at El Caballo Park, the 10-mile course ascends to Stanley Peak, providing a stunning 360-degree panoramic view. Elevation gains range f..

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 Del Dios Trail Race, known as the "Race of the Gods," is an annual trail running event held at scenic Lake Hodges in Escondido, California. The 11th edition features multiple race distances including a 50K, half marathon, 10K, and 5K, all set on dirt service roads and single-track trails. Elevat..

The San Diego 50 Mile & Trail Marathons is a diverse running event taking place in Escondido, California, featuring multiple race options including a 50-mile ultra marathon, trail marathon, marathon relay, heavy half marathon, and various shorter distances for all ages. The event emphasizes inclusiv..

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 Ranch 50K is a trail running event held at Daley Ranch in Escondido, California, featuring a challenging course with significant elevation gain. The 50K race consists of two loops of a 15.6-mile trail, totaling 31.1 miles with 6,318 feet (1,926 meters) of climbing. A half marathon option covers..

The San Pasqual Valley Trail Race, held in Escondido, California, offers a scenic running experience through San Diego's wine country. Participants can choose from three distances: a relatively flat 10K, a Half Marathon, and a challenging 20-mile course. The longer distances feature an out-and-back..

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 Old West Trail Runs, held at Anza Borrego Desert's Stagecoach Trails RV Resort, offer 50K, marathon, and half marathon distances through scenic desert terrain. The courses feature minimal elevation gain, with the 50K and marathon having about 2,500 feet and the half marathon around 670 feet. Par..

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 Pirate's Cove 6/12/24 Hour Run/Hike is an endurance event held at Lake Cuyamaca, California. Participants can choose to run or hike for 6, 12, or 24 hours on a scenic course centered around the lake area. The event takes place at Chamber's Park Campground, which serves as race headquarters and o..

The Valencia Trail Race, held in Valencia, California, offers a challenging and scenic trail running experience with three distance options: 10K, half marathon, and 50K ultra. Set against the backdrop of Southern California’s hills and mountains near the California State Park boundaries, the course..

The Coast to Crest 10K and 5K is an annual trail running event held in Del Mar, California, featuring a very flat and fast course ideal for runners seeking personal records. The out-and-back routes are 100% dirt trail, well-groomed, and offer spectacular wide-open lagoon views with a downhill finish..