Trail Running Calendar Illinois 2024-2025

The Tour de Trails is a series of running events organized by the Rockford Road Runners in Rockford, IL. This event features multiple race distances, including 3-mile, 6-mile, 9-mile, and 12-mile options, catering to runners of various skill levels. The races are part of the 2025 Circuit and are des..

The Siberian Express, organized by the Kennekuk Road Runners, is a challenging 7.45-mile trail run held annually in Oakwood, Illinois. Scheduled for January 4, 2025, this event features a scenic course that includes steep hills, creek crossings, and opportunities to see local wildlife. Participants ..

The Frozen Gnome is a challenging winter running event held in Crystal Lake, IL, featuring a scenic course through Veteran Acres and Sterne’s Woods. Participants can choose between a 50K ultra run or a 10K race, both rated as "Triple Black Diamond" for their difficulty. The 50K consists of five loop..

The 50K Mashup Slam is a series of challenging 50K trail races held throughout the Midwest, designed to celebrate the often-overlooked distance in ultrarunning. Kicking off in January with the Frozen Gnome 50K and concluding in November with the Miner 49er 50K, participants who complete all five rac..

The F^3 @ the Forge: Fat Tire Race & 10K Trail Run is set for January 12, 2025, at The Forge: Lemont Quarries in Lemont, Illinois. This exciting winter event features a variety of races, including a long course (approximately 20K) and a short course (about 10K) for fat tire biking, as well as a 10K ..

The Bald Unyielding Twilight Trail Trial is an exciting ultra-running event taking place at the Bald Hill Prairie Preserve in Mount Morris, Illinois. Scheduled for February 22-23, 2025, this unique race features timed events of 3, 6, and 12 hours, allowing participants to test their endurance in the..

The Cactus Classic Trail Races, celebrating its 15th anniversary in 2025, offers a challenging and enjoyable experience in the scenic Sand Ridge State Forest, Manito, IL. Participants can choose from a marathon, half marathon, or 10K, all set against a backdrop of pine forests and unique sandy trail..

The Muddy Shamrock @ The Forge is an exciting trail running event scheduled for March 15, 2025, in Lemont, Illinois. This annual race features two main events: a Trail Half Marathon and a Trail Quarter Marathon, both set against the scenic backdrop of the historic Lemont Quarries. Participants will ..

The Skunk Ape 806/314 Trail Race is an exciting running event taking place on March 22, 2025, at Lowell Park in Dixon, IL. Participants can choose between two challenging distances: 33.75 miles to be completed in 8 hours and 6 minutes, or 13.5 miles in 3 hours and 14 minutes. The race features a uni..

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 and a 10-mile course, both set on scenic trails with significant elevation gain. Participa..

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

The Potawatomi Trail Runs is an exciting multi-distance trail running event taking place at McNaughton Park in Pekin, IL, from April 10 to 13, 2025. Participants can choose from various distances, including 200, 150, 100, 50, 30, and 10 miles, all set on a challenging 10-mile loop featuring single t..

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 the Half Marathon, 10K, and 5K. This event not only promotes fitness but also suppor..

The Loud Thunder 50 is a trail running event taking place at Loud Thunder Forest Preserve in Illinois City, IL, featuring three race distances: 50 miles, 50K, and a half marathon. Scheduled for April 19, 2025, this event aims to provide a challenging yet rewarding experience for runners amidst the s..

Childish Nonsense is a whimsical running event taking place at Deer Grove Forest Preserve in Palatine, IL. Participants can choose from various distances, including a 50 Miler, 50K, 25K, and 10K, all set on a wide, non-technical trail. The event aims to foster a sense of community and joy in ultraru..

The Earth Day 50K/15 Mile/5 Mile event, taking place in Crystal Lake, IL, offers participants a choice of three race distances. The course features a scenic 5-mile loop through rolling hills and single-track trails, designed to challenge runners while promoting an eco-friendly atmosphere. The event ..

The Trails for Tails 5K is a charitable running event held at Weldon Springs State Park in Clinton, Illinois. This race aims to support the DeWitt County Animal Shelter and Second Chance for Pets. Participants can enjoy a scenic 5K run, with registration fees set at $35.Additionally, there is a 1-mi..

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 F^3 Cap Sauers Trail Marathon & 10 Mile is a running event scheduled for May 10, 2025, in Palos Hills, Illinois. Participants can choose between a full marathon (26.2 miles) and a 10-mile race, both set within the scenic Cap Sauers Holding Nature Preserve, the largest undeveloped area in Cook Co..

The Chicago 7-11 Hour Endurance Run is an exciting trail running event taking place at Wolf Road Woods in Willow Springs, IL. Participants can choose between a 7-hour or an 11-hour endurance challenge, navigating a scenic 4-mile loop through restored forests and historic preserves. The event emphasi..