Trail Running calendar near Byron 2025-2026

The Tiger 10 Miler is an annual trail race held in Byron, Illinois, featuring a challenging 10-mile course through the scenic Byron Forest Preserve and Nardi Equine Prairie. Participants receive a custom finisher's medal, a race shirt, and have the chance to win awards in various age categories. The..

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 Illinois' only point-to-point, all-trail ultramarathon, taking place along the scenic Hennepin Canal State Trail. Scheduled for October 4-5, 2025, this event features multiple race distances, including a 100-mile, 50-mile, and 50K, making it suitable for both seasoned ultraru..

The Trail Run at Indian Lake is an exciting running event held at Indian Lake County Park, featuring two course options: a long course of approximately 10.5 km and a short course of about 5.8 km. The event promotes sustainability by adopting a cup-free policy, encouraging participants to bring their..

The Lapham Peak Colorama Run/Walk is an annual fall running event held at Lapham Peak State Forest in Delafield, Wisconsin. Celebrating its 36th year in 2025, the event features 5K and 10K courses on wide, well-groomed ski and hiking trails. The 5K route tours the park's middle level, while the 10K..

Zachariah's Acres Fall Run, Walk & Roll is a charitable event taking place in Oconomowoc, WI, designed to support children with special needs. The event features a 5K, a half marathon, and a family-friendly walk and roll, all set against the backdrop of 125 acres of beautiful natural scenery. Partic..

The Mines of Spain 100 is an ultra-marathon event featuring both 100-mile and 100-kilometer races, set in the picturesque bluffs, prairies, and forests of eastern Iowa's Driftless region. The race course, approximately 20 miles long, offers a diverse range of terrains, including steep technical sing..

Soul Crusher is an exciting trail running event taking place in Crystal Lake, IL, featuring challenging 10-mile and 5-mile courses designed by Jeff Lenard. Known for its tough terrain, the race promises to test participants' limits, with a playful warning that it may "crush your soul." Runners can e..

The Black Hawk Ridge Trail Run will take place in Mazomanie on Sunday 19 October 2025.

The Fancy Nonsense 25K/50K is a whimsical running event designed to bring joy and laughter to participants while challenging their physical and mental limits. Set in the scenic Palos Trail System near Chicago, the race features a 5.5-mile loop course primarily on single track trails. Runners can cho..

Among the Trees is a scenic running event scheduled for October 25, 2025, in Dousman, Wisconsin. Participants can choose between two challenging distances: 100k and 50k, both set against the beautiful backdrop of the Southern Kettle Moraine Forest along the historic Ice Age Trail. The race begins at..

The Miner 49er is an endurance running event held in the scenic Mines of Spain near Dubuque, Iowa. It features two race distances: a 25K and a 50K, with the 50K being a double loop of the 25K course. Runners experience approximately 2,200 feet of elevation gain on the 25K and 4,400 feet on the 50K...

The Forge Trail Run Festival, scheduled for November 15, 2025, in Lemont, IL, features a variety of trail running events including 10K, 20K (Half Marathon), 30K, and 60K races. Participants will navigate single and double-track trails through scenic woods and gravel paths around the historic Lemont..

The Fast Eddie 50K and 5K is a running event held at Lapham Peak in Delafield, Wisconsin, on November 15, 2025. The race celebrates endurance and community, honoring Ed Condon and supporting the Little Warrior Foundation, which aids children battling cancer. The 50K features five loops on the scenic..

The Quiet Silence 50k is a unique running event taking place in Lake Mills, Wisconsin, on December 5-6, 2025. Participants will tackle an out-and-back course on the scenic Glacial Drumlin State Trail, which features a mostly flat, crushed gravel surface. Runners have eight hours to complete the 50k..

The Arctic Frog Run in Libertyville, IL, is a beginner-friendly endurance race featuring multiple distances, including 50K, 25K, 15K, 10K, and 5K. The scenic course combines pavement, wooded trails, and crushed limestone paths along the Des Plaines River and Northwest Casey Trails. Participants can..

The Guv'nor Frozen 50K is an ultra-marathon held at Governor Dodge State Park in Dodgeville, Wisconsin, on December 6, 2025. Participants can choose from 50K, 25K, or 15K distances, with the event challenging runners to contend with winter weather, trail terrain, and an elevation gain of up to 4,438..

The Frozen Gnome is a challenging winter trail running event held in Crystal Lake, Illinois, at Veteran Acres park. Featuring a triple black diamond-rated course, the race offers a 50K ultra run, a 10K race, and relay options for teams of two or five. The course consists of a scenic 10K single-track..

The Frozen Assets 5K Run/Walk is a unique event hosted by Clean Lakes Alliance, taking place on a frozen lake in Madison, Wisconsin. Participants can choose to run or walk across the ice of Lake Mendota, enjoying stunning views of downtown Madison and the University of Wisconsin-Madison campus. The..

ARKTOS is a challenging ultra running event held in Dousman, Wisconsin, featuring 6, 12, and 20-hour race options for solo runners or relay teams of up to four. Set in a quiet, cold forest environment with frozen ground, the race tests participants' endurance and mental toughness in potentially unco..