Trail Running calendar near Lemont 2026-2027

This cross country run on July 4th in Williams Bay offers a 5K on grass trails through the Kishwauketoe Nature Conservancy. A kids' quarter-mile event is also available. Registration is online only, with awards for top age-group finishers.

A trail 5K at Byron Forest Preserve with chip timing and awards by age group, plus a 1 mile Fun Run with a participation medal. Parking and indoor restrooms are available onsite.

H-F Beast Obstacle Course Dash in Homewood, IL on July 12, 2026 features two age categories with obstacle runs. The event awards finisher medals and t shirts and includes an optional prep course in June.

An endurance loop event at the Pinetum in Lowell Park, Dixon IL, using a 0.411 mile paved loop. Participants choose 6 hour, 12 hour, or 24 hour formats and track their own laps with tents allowed in the loop center.

Oakadoke Trail Runs features tree-covered single-track, switchbacks and creek crossings on looped 4, 9 and 18 mile courses near Valparaiso, IN, with frequent aid stations and a cupless race format.

A night trail event in Dixon, IL with looped courses of about 5 miles per lap, options for single runners or three‑person relays, on mixed grass, gravel, and dirt trails.

A community cross country race in Mount Prospect on August 9, 2026 offering 1, 2 and 3 mile distances to raise funds for the Little Giraffe Foundation and research into premature babies.

Experience a Scottish themed obstacle course race in Pingree Grove featuring 15k, 5k, and family 3k distances. Challenges include classic rigs and unique tasks like archery and caber carries in a Highland setting.

Run the Rails in Elburn, Illinois on August 22, 2026 features a 1-mile fun run plus 4- and 7-mile courses that start and finish at Prairie Park. The routes cross the Union Pacific West rail line and benefit the Elburn Parks Commission.

The Summer Trail Classic offers three distances on the single-track trails of Paul Douglas Forest Preserve. It's the third race in a yearly trail series, with proceeds supporting local trail maintenance. Participants receive a running vest..

Tough Mudder Chicago at Richardson Adventure Farm on August 29, 2026 combines mud and named obstacles with 5K, 15K, and Infinity lap options plus a Mudder Village festival and finisher rewards.

A 10 hour endurance run at Bluhm County Park on August 29, 2026, using a 4 to 4.1 mile loop completed on an hourly clock. Runners earn chips after four loops to trade for prizes and receive a limited edition shirt and wooden medal.

A technical trail event at Franklin Creek State Natural Area featuring 5K and 10K routes with multiple hills, limestone bluffs, creek crossings, and a rucking option. Proceeds support the Franklin Creek Conservation Association.

A USATF-certified half marathon and 10K through Danada Forest Preserve on crushed limestone trails, finishing near the horse track. Both distances award finisher medals, with chip timing, pacers, shuttle parking, and on-course water station..

A three day trail event at Rock Cut State Park featuring a night 10 km plus 25 km and 50 km races, with single race entries and Triple Crown series options that award commemorative spike prizes to finishers.

A timed running event on an about 1 mile paved loop in a 58 acre Chicago park, offering 3 hour, 6 hour, and 12 hour formats plus relay options and hourly on course challenges.

This obstacle course race at Indiana Dunes National Park offers three distances, including a K9 event. The course features diverse terrains inspired by military landscapes. It's open to participants aged 13 and up.

A multi-division obstacle course event at The Cliffs park featuring 5K and 10K courses, a ruck division, a multi-lap Bearded Challenge, and a kid's course. Finishers receive a shirt, medal and professional action photos.

Experience ten miles of hills and winding trails through the Byron Forest Preserve and Nardi Equine Prairie. This cup free race features cash prizes and a post race celebration with pizza at Hairy Cow Brewing Company.

A loop-based running event at Limestone Park offering 8 hour and 4 hour races on a 1.65 mile course with mixed crushed limestone and asphalt terrain. Scoring is by completed loops and proceeds support local organizations.