Trail Running Calendar Illinois 2026-2027

Race against the clock on a 2.25-mile alternating loop trail in Lowell Park. Choose the 8-hour 806, the 3-hour 314, or form a relay team. Finishers within the time limit earn unique apparel.

Take on the scenic trails of Clinton Lake State Recreation Area with the Clinton Lake Ultra. Choose between a challenging 30-mile or a 10-mile loop course through forests and meadows. It's a cup-free, community focused event with a mandator..

Explore scenic Carpenter Park on a well-marked trail run with 5K and 10K options. The race offers views of the Sangamon River, woodland paths, and wildlife sightings. It's the first event in a three-race trail series, with all finishers rec..

Event Overview The Potawatomi Trail Runs take place from April 9 to 12, 2026, at McNaughton Park in Pekin, Illinois. This event marks its 25th year. Distances The event offers several trail running distances: 200 Miler 150 Miler 100 Miler..

Experience the natural beauty of Camp Ondessonk with distances ranging from a one mile fun run to a half marathon. Explore scenic forests and canyons in the Illinois landscape on this annual trail running event.

Experience the beautiful trails of Allerton Park in Monticello with a weekend of running events. Choose from a glow in the dark 5k, a 10k, or a half marathon while supporting Make A Wish Illinois.

Experience a 4 mile trail run through the historic St James Farm in Warrenville. Enjoy a scenic single loop course featuring rolling terrain, limestone paths, and wooded trails with awards for multiple age categories.

Celebrate Earth Day on the trails at Veteran Acres park. Choose from a 50K, 15-mile, or 5-mile loop on scenic single-track. The event focuses on being landfill-free and offers awards for top finishers.

Loud Thunder 50 offers three trail distances through the rugged terrain of Loud Thunder Forest Preserve. The loop course features significant elevation and fully stocked aid stations. Camping is available right at the start and finish line.

Run through the scenic rolling trails of the Morton Arboretum on a USATF certified 10K course. Enjoy a lively post race party with live music and refreshments while supporting vital tree conservation and research.

A whimsical trail run in Deer Grove Forest Preserve featuring four distances on a wide, non-technical looped course. The event, organized by CUSS Running, includes inclusive community initiatives. One aid station at the start/finish support..

Run or walk to support Anderson Humane at their largest fundraiser. Choose a timed 5K run or bring your dog for a 1.5-mile walk along the Batavia Riverwalk. The event includes awards, a lure course, and activities for animal lovers.

Experience an illuminated night obstacle race in Mchenry featuring torch lit trails and technical rigs. Participants can enjoy live entertainment and bonfires after completing their 5k or unlimited lap challenge.

Experience the Three Ravines Course at Wolf Road Woods with distance options of 3.1 or 5.4 miles. This family friendly trail event features a mix of single track terrain and a post race celebration with craft brews.

Test your discipline in this 6 hour trail challenge where you must complete a 5K every hour to stay in the race. Earn unique patches and medals while navigating the natural terrain of Deer Grove East.

Run a flat, out-and-back course on the historic Great Western Trail. Choose from a half-marathon or 10K distance. Your registration supports local mental health charities.

Experience a trail race through the scenic Wildlife Prairie Park in Central Illinois. Choose between an accessible 5k loop or a more demanding 10k course featuring single track trails and post race snacks.

Experience a scenic trail run through the Sag Valley Trail system with a marathon or 10 mile distance. Enjoy a non technical horse trail course followed by post race chili and beer at Teason’s Woods.

The Chicago Yeti 7/11 Hour Endurance Run is a timed trail event on a 4-mile loop through the Palos Preserves. Runners choose a 7 or 11-hour goal, fueled by a unique aid station with unconventional snacks. It's a cupless race focused on incl..

Test your limits at Horseshoe Lake State Park with an escalating weight endurance event. Complete multiple loops of a five mile course where the load increases every time until only one person is left.