Trail Running Calendar Illinois 2026-2027

Run the Frozen Tundra IPA 5K along the Des Plaines River Trail, then warm up at Half Day Brewing with music, beer, hot toddies and food. Limited to 300 runners, entries include shirts, medals and a lively post race party.

Join the Frozen Cock's Crow 5K at Willenborg Woods, a spirited trail run on technical singletrack with steep climbs and a stream crossing. Enjoy a family friendly, grassroots vibe and a fun post race celebration.

The Galena Classic Sasquatch Shuffle will take place in The Galena Territory on Saturday 14 February 2026.

Run the festive Fat Tuesday 5K or 10K at Keg Grove in Bloomington along the Constitution Trail. Grab Mardi Gras beads, enter a King Cake raffle and enjoy post race drinks while supporting St Vincent De Paul.

Run the Fox Valley Winter Challenge 8K on Feb 21 at Oakhurst Forest Preserve in Aurora, a mixed terrain winter trail with possible snow, ice, or mud. All finishers get a medal and completing the series earns bonus gear including a hooded zi..

Tour de Trails is a four race winter trail series around Rockford IL from December to March, featuring 3, 6, 9 and 12 mile routes through scenic local preserves. Expect icy, snowy conditions and a friendly community vibe supporting Rockford..

Trail races through the sandy pine forests of Sand Ridge State Forest near Manito, Illinois, offering 10K, half marathon, and marathon distances with aid stations, age group awards, and finisher medals for longer distances.

Early-season trail races at The Forge in Lemont include a half marathon and a quarter marathon over wooded single and double track MTB trails and some gravel. Courses feature varied terrain, technical sections, and a common start and finish..

Blarney Blitz is a St. Patrick's Day themed 5K Run/Walk in Peoria, running along the Riverfront Trail with a post-race party at Kelleher's Irish Pub. The event benefits Crew 309 and is organized by ShaZam Racing.

Tour de Trails is a four race winter trail series around Rockford IL from December to March, featuring 3, 6, 9 and 12 mile routes through scenic local preserves. Expect icy, snowy conditions and a friendly community vibe supporting Rockford..

Wrap up winter on scenic mixed trails at the Fox Valley Winter Challenge 10K in St. Charles on March 22, 2026. Expect varied footing, a finisher medal and cozy winter hat, plus bundle pricing if you tackled other series races.

Take on the Skunk Ape 806 314 Trail Race at Lowell Park with 33.75 mile and 13.5 mile solo options or a team 806 relay. Alternate wooded loops, enjoy hearty aid station fare and finisher swag, and chase podium awards and great camaraderie.

Tackle a scenic 4 mile loop through rolling limestone and wooded trails at St James Farm in Warrenville, IL, with roots, mud and natural single loop terrain. Enjoy a long sleeve race shirt, wood finisher medallion and lively race day atmosp..

Run scenic single track loops around Clinton Lake with 30 mile and 10 mile options on March 28, 2026. Expect rolling terrain, fully stocked aid stations, finisher swag and a community focused event supporting local trail maintenance.

Trail races at Carpenter Park on April 4 2026 offering 5K and 10K routes with river and woodland views. It is the first event in the All American Trail Trek Series and includes a race T-shirt and finisher medal.

Celebrate 25th Potawatomi Trail Runs April 9 to 12 in Pekin, Illinois at McNaughton Park. Choose from multiple ultra distances or a scenic 10 mile loop over single track, prairies and creek crossings with on course aid and rustic camping.

Run Camp Ondessonk's scenic trails, canyons and lakeside paths at the 16th annual Ondessonk Trail Races on April 11, 2026. New this year are a half marathon and a family one mile fun run, plus 10k and 5k race options.

Allerton Races on April 11 and 12, 2026 features trail and road routes, a glowing nighttime Trail Glo 5K and virtual options for every pace. Proceeds support Robert Allerton Park and Make A Wish Illinois with Wish Warrior recognition.

Celebrate Earth Day at Crystal Lake with 50K, 15 Mile and 5 Mile trail options on a rolling 5 mile loop around the pond. Enjoy single track, a main aid station with homemade fuel and an eco friendly vibe.

Loud Thunder 50 features 50 mile, 50K and half marathon trail races at Loud Thunder Forest Preserve in Illinois City, IL, running scenic loops mostly on single and double track with plenty of climbing. Camp at Horse Corral Campground and en..