Trail Running Calendar Illinois 2026-2027

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..

Potawatomi Trail Runs in Pekin, Illinois offers looped trail races from 10 to 200 miles across April 9 to 12, 2026, with single track, creek crossings and rolling hills. Aid stations are placed every 5 miles and primitive camping is availab..

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.

Fight for Air Climb at Prudential Plaza in Chicago is a stair climb event on April 12, 2026. It offers Full Route, Half Route, Team and Firefighter climb categories, each covering one mile.

Trail race at Veterans Acres in Crystal Lake on April 18, 2026 offering 50K, 15 Mile, and 5 Mile options on a 5-mile single-track loop with one main aid station and an eight-hour cutoff.

Trail races of 50 miles, 50 km and a half marathon take place at Loud Thunder Forest Preserve on April 18, 2026, using a 13.3 mile loop with mostly trail terrain, two aid stations, camping at the start area and strict cutoff and registratio..

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.

Childish Nonsense is a lap based trail event at Deer Grove Forest Preserve in Palatine, IL offering 10K, 25K, 50K and 50 mile distances with a mostly wide path course and a single aid station every 5.5 miles.

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.

Test your grit at Byron Motosports Park with tactical obstacle courses ranging from 5K to 10K endurance laps. Choose from elite vest challenges, weighted rucking, or open waves designed to honor the resilience of first responders.