Trail Running calendar near Byron 2026-2027

Part of the Fox Valley Winter Challenge Trail Series, the 8K takes place at Oakhurst Forest Preserve in Aurora on February 20, 2027. Registration is consolidated for the series and includes options for series swag.

A winter timed ultra in Dousman, Wisconsin offering 6, 12, and 24 hour options for solo runners or relay teams of up to four, set in winter woods and on a frozen lake with warming shelters, hot drinks, a meal, and finisher items included.

Early-season trail races at The Forge in Lemont, Illinois, on wooded single and double track trails with mud, roots and gravel. Distances offered are 13.1 miles and 6.5 miles with technical singletrack sections.

A 10K trail race at Hickory Knolls Discovery Center in St. Charles on March 14, 2027. The 10K is part of a winter series with 5K and 8K races and has a $45 registration fee.

A looped trail event at Lowell Park with multiple timed distances on a 2.25 mile alternating-direction loop, manual lap counting, finishers' items and awards, an aid station with varied food, and a nonrefundable registration policy.

A trail event at Deer Grove Forest Preserve near Palatine, IL on April 24, 2027, offering 5.5 mile, 25K, 50K and 50 mile distances with a single aid station at the start and a playful, community-focused atmosphere.

Trail races at Donald County Park include 5 km, 15 km and a Kids One Mile Fun Run across prairie, single-track, sand and bridges. Proceeds support Friends of Donald Park for trail maintenance and repair.

A flat out and back half marathon and 10K on the limestone Great Western Trail, organized by Fox River Trail Runners, with part of registration fees donated to three local mental health charities.

Rumble on the Ridge is a backyard ultra style last person standing race near Arena, Wisconsin, run on a 1 to 1.25 mile loop with 20 minute laps. The course reverses direction every four hours and includes 250 to 300 feet of elevation gain p..

The Frontline OCR will take place in Byron on Saturday 22 May 2027. You can run between 5 and 10 kilometers.

Trail races in Belleville, WI on flat rail trails with 50 Miler, 50K and Half Marathon options. The course includes trestle bridges, scenic views and a quarter-mile tunnel; organizers list aid stations, free photos, pizza and beer.