Trail Running calendar near Cornell 2025-2026

The Run The Rails will take place in Elburn on Saturday 16 August 2025. You can run between 4 and 7 miles.

The Gristmill Grind 10K is a challenging trail race held annually at Franklin Creek State Park in Franklin Grove, Illinois. Known as one of the most difficult 10Ks in the area, the course features technical trails with approximately 800 feet of elevation gain, multiple hill climbs, and four creek cr..

The Temptation 200 Ultras, held annually at Sand Ridge State Forest in Forest City, Illinois, is a challenging ultramarathon event celebrating its 7th anniversary in 2025. The race offers multiple distances: a grueling 200K, a 50K, and a "Not At All Tempted" 10K, all set on a demanding forest course..

The Naperville Trails Half Marathon & 10K is an annual running event held in Wheaton, Illinois, set for September 6, 2025. Participants can choose between a USATF-certified half marathon or 10K distance, both featuring a flat and fast course that winds through the scenic Danada Forest Preserve on cr..

The Cornell Days 5k and 1 Mile Fun Run/Walk is a family-friendly running event held in Cornell, Illinois, starting at Clinton Keith Mills Memorial Park. The race features an out-and-back course along the county blacktop roads through the scenic countryside, suitable for both first-time runners and e..

The Wild Wild Wilderness is an annual running event held at Kickapoo State Recreation Area in Oakwood, Illinois. Established in 1981, the race features multiple distances including a 5K and a challenging 7.45-mile trail run that covers steep hills, creek crossings, and scenic woodland terrain. The c..

Hindsight Ultra Trail Runs, held in Dixon, Illinois, offers a grassroots ultra running experience with distances of 25K, 50K, 100K, and 100 miles. The course features a 7.85-mile loop combining roughly 50% singletrack, 30% grassy meadows, and 20% gravel paths, with about 6,200 feet of elevation gain..

The Hennepin Hundred is a premier ultramarathon held in Sterling, Illinois, featuring 100-mile, 50-mile, 50K, and 100-mile team relay races. The point-to-point course follows the scenic, flat, and fast Hennepin Canal State Trail, Illinois’ longest multi-use trail, stretching from the Rock River to t..

The Farmdale Trail Run, held October 11-12, 2025, takes place at Farmdale Reservoir near East Peoria, Illinois. This premier trail event offers multiple distances: 10K, half marathon, 30-mile, 50-mile, and 100-mile ultras. The course features miles of single-track trails, service roads, and open pra..

The Buckley 5 Miler will take place in Lowell on Saturday 18 October 2025. You can run 5 miles.

The Palos Park Spooky Shuffle will take place in Palos Park on Saturday 18 October 2025. You can run between 5 and 10 kilometers.

The Witches in the Woods 5K/2K is a Halloween-themed nighttime running and walking event held at the Lake County Fairgrounds in Crown Point, Indiana. Participants can choose between a timed 5K run or a non-timed 2K walk through wooded trails and roads, so bringing flashlights or headlamps is recomme..

The Fancy Nonsense 25K/50K is a whimsical ultramarathon held in the Palos Trail System near Willow Springs and Lemont, Illinois, about 20 minutes from downtown Chicago. Runners can choose from 25K, 50K, or 5-mile distances on a mostly single-track, 5.5-mile loop course that encourages joy and imagin..

The McNotagain Fall Trail Run takes place at McNaughton Park in Pekin, Illinois, known for its scenic, flat terrain in Central Illinois. The event offers multiple race distances including 3.5, 10, 30, and 50 miles, all run on a 10-mile loop course that is run in reverse direction compared to the spr..

The Allerton Park Trail Run, held at Robert Allerton Park in Monticello, Illinois, features a challenging 5.7-mile trail run alongside a 2-mile nature walk. The course follows the scenic Sangamon River and includes natural obstacles like roots, ruts, and sharp turns, offering a rugged trail experien..

The Fast Track Cross Country will take place in Schaumburg on Sunday 9 November 2025. You can run 3 miles.

The Big Timber XC Challenge will take place in Elgin on Sunday 9 November 2025. You can run between 3 and 5 miles.

The Forge Trail Run Festival, held in Lemont, Illinois, offers a challenging late-fall trail running experience with distances of 10K, 20K (half marathon), 30K, and 60K. The courses start and finish at The Forge and wind through single and double-track trails in the woods, gravel paths, and around t..

The Muddy Shamrock @ The Forge is a trail running event held in Lemont, Illinois, featuring a Trail Half Marathon (approximately 13.1 miles) and a Trail Quarter Marathon (about 6.6 miles). The race takes place on wooded single and double-track mountain bike trails, as well as gravel paths around the..

The Skunk Ape 806/314 Trail Race, held at Lowell Park in Dixon, Illinois, offers challenging trail running events on March 21, 2026. Participants can choose between a 33.75-mile race to be completed in 8 hours and 6 minutes, a 13.5-mile race with a 3 hour and 14 minute limit, or a relay option. The..