Trail Running Calendar Illinois 2025-2026

The Clinton Lake Ultra is an exciting trail running event taking place at the Clinton Lake State Recreation Area in DeWitt, IL. Scheduled for March 29, 2025, the event features two challenging races: a 30-mile ultra and a 10-mile run, both set on scenic trails with significant elevation gain. Partic..

The Schon Park 3/6/9 Endurance Runs, hosted by Ultra Bound Coaching, is an exciting endurance event taking place in Glen Carbon, IL. Participants can choose from three timed events: a 3-hour, 6-hour, or 9-hour run, all set on a 1.5-mile looped course featuring paved paths and rolling hills. The even..

The Ondessonk Trail Races, taking place at Camp Ondessonk in Ozark, IL, features two exciting events: a 5k Fun Run and the Manchester Trail 10k. Scheduled for April 5, 2025, participants will enjoy scenic routes through beautiful forests, canyons, and pastures. The event encourages community engagem..

The Potawatomi Trail Runs, taking place from April 10 to 13, 2025, in Pekin, Illinois, offers a variety of ultra-distance races including 200, 150, 100, 50, 30, and 10-mile options. The course features a challenging 10-mile loop with single track dirt paths, creek crossings, and rolling hills, provi..

The Allerton Races is a running event taking place in Monticello, Illinois, featuring a variety of races including a Half Marathon, 10K, and a nighttime Trail-Glo 5K. Participants can also choose virtual options for each distance. This event not only promotes fitness and community engagement but als..

The Loud Thunder 50 is a trail running event taking place on April 19, 2025, at Loud Thunder Forest Preserve in Illinois City, IL. Participants can choose from three race distances: 50 miles, 50K, and a half marathon, all set against the scenic backdrop of the Mississippi River. The event emphasizes..

Childish Nonsense is a whimsical running event taking place at Deer Grove Forest Preserve in Palatine, IL, featuring multiple race distances: 50 Miler, 50K, 25K, and 10K. The course consists of wide paths, making it accessible for participants of all levels. The event aims to foster a sense of commu..

The Pioneer Trail 5K Run/5K Walk/Fun Run, organized by the Trico High School Cross Country team, is set to take place in Campbell Hill, Illinois. This annual fundraising event features a 3.1-mile mixed surface course, providing participants with a true cross-country experience. Runners can choose to..

The Earth Day 50K/15 Mile/5 Mile event, taking place in Crystal Lake, IL, offers participants a choice of three challenging race distances. Set in a scenic environment, the course features rolling hills and single-track trails, designed to provide an exhilarating experience for runners. The event pr..

The Hearts Desire 6-Hour Endurance Run is an exciting running event taking place at the Herrin Sports Complex in Herrin, Illinois. Participants will race on a flat, paved 1.3-mile loop course, aiming to complete the most laps within six hours. Awards will be presented to the top three overall finish..

The Great Western Half-Marathon & 10K, organized by the Fox River Trail Runners, is a well-established running event held on the scenic Great Western Trail. Celebrating over 25 years, this competitive race features a flat, out-and-back course, making it accessible for runners of all levels. Schedule..

The Spring Stampede 10K is an exciting trail running event taking place at Wildlife Prairie Park in Hanna City, Illinois. Scheduled for May 4, 2025, this inaugural race offers participants a chance to experience the scenic beauty of the park while competing in a 10K trail run. The event is organized..

The F^3 Cap Sauers Trail Marathon & 10 Mile is set to take place in Palos Hills, IL, on May 10, 2025. This event features a challenging marathon and a 10-mile race, both traversing the scenic Cap Sauers Holding Nature Preserve, the largest undeveloped area in Cook County. Participants will experienc..

The Galena Sky Trail Races, set for May 17, 2025, offer an exciting challenge for trail runners at Chestnut Mountain Resort in Galena, IL. Participants can choose between an 8-hour or 4-hour timed loop course, featuring scenic views of the Mississippi River. The event includes a festive atmosphere w..

The Chicago 7-11 Hour Endurance Run, organized by Yeti Trail Runners, is a unique trail running event set in Willow Springs, IL, on May 17, 2025. Participants can choose between a 7-hour or 11-hour endurance challenge, navigating a scenic 4-mile loop through the picturesque Wolf Road Woods and Palos..

The Red Cedar Trail Half Marathon and 38k takes place at Giant City State Park in Makanda, Illinois, offering a scenic and challenging course primarily on the Red Cedar Trail. Scheduled for May 24, 2025, the event features a half marathon and a 38k race, with a new second loop added for increased di..

The Trail Trot Cross Country 5K and Kid's Fun Run is an exciting running event taking place at the Crawford County Recreation Center in Robinson, Illinois. This inaugural event features a 5K cross country race that traverses the scenic Lincoln Trail College campus, primarily on grass with some paved..

The Elsa Chicken Plucker Backyard Ultra is an exciting trail running event set in the scenic Willenborg Woods in Charleston, IL. Participants will tackle a 4.167-mile loop every hour, with the last runner standing earning a Bronze Ticket to the prestigious Big Dog's Backyard Ultra World Championship..

The Lincoln Memorial Garden Trail Race 8K is set to take place in Springfield, Illinois, on June 7, 2025. This event features an 8K trail race that winds through the scenic trails of the Lincoln Memorial Garden, alongside Lake Springfield, and across the Ostermeier Prairie Center grounds. Participan..

The Yellowbrick Backyard Ultra is an exciting running event taking place in Peoria, Illinois, at Kinsey Park, known for its whimsical Wizard of Oz theme. This unique "last runner standing" race features a 4.16-mile loop that starts every hour, challenging participants to complete each lap within the..