Trail Running calendar near Griffith 2026-2027

Loop format trail event at Busse Woods in Ned Brown Forest Preserve on August 15, 2026. Runners complete 3.1 mile loops on crushed limestone and packed gravel with a centralized aid station and distances from 5K to 50K.

A loop trail ultramarathon at Busse Woods in Elk Grove Village Illinois on August 15 2026. It offers 40 mile and 50 mile options, with registration closing August 14 2026.

A community road race in Elburn, IL on August 22, 2026 with 1-mile, 4-mile and 7-mile courses that cross the Union Pacific West rail line. The event benefits the Elburn Parks Commission and guarantees a racerback or tank if registered by Au..

A trail race at Paul Douglas Forest Preserve on August 23, 2026 offering approximate 4, 9.5 and 13 mile options. Part of the Dick Pond Athletics series with proceeds supporting the Chicago Area Mountain Bikers.

Tough Mudder Chicago at Richardson Adventure Farm on August 29 2026 offers 5K and 15K obstacle runs plus an 8 hour Infinity format, a Mudder Village with food and music, and finisher medals shirts and drinks.

A 10 hour endurance run at Bluhm County Park with a roughly 4 to 4.1 mile loop and an hourly cutoff per lap. Complete four or more loops to earn chips redeemable at prize tables; participants receive a limited edition shirt and wooden medal..

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..

Timed ultrarunning at Horner Park with 3, 6, and 12 hour options, looped laps, hourly playful challenges, relay team choices, and an aid station at the start finish.

An obstacle course race at Indiana Dunes National Park on September 13, 2026, featuring 10k, 5K and a K9 3.1-mile event. The course uses varied landscapes to reflect terrains associated with military service.

Midwest OCR in Marseilles, Illinois features 5K and 10K obstacle courses, ruck options, a kid's loop, and a multi-lap Bearded Challenge, with finisher shirts, medals, and professional photos included; elite divisions award podiums and cash..

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.

Experience the Bloomingdale Trail Run in Chicago featuring a timed 5K and short dashes for youth. This annual event offers a variety of distances on an urban trail for a family friendly day of running.

Timed 12- and 6-hour races on a scenic 2 mile loop along Evanston's lakefront and the Northwestern campus. The event includes two aid stations, public water fountains, and handmade finisher awards.

Multi-distance trail event at Tryon Farm in Michigan City on October 3, 2026. Participants run or walk repeated 4 mile loops across grassy fields, single track dirt trails and short paved sections with a main station and unmanned aid.

A community 5k run and walk hosted by the Lockport Fire Foundation on October 4, 2026 at Hassert Park in Lockport, IL. Entry includes a t-shirt and finisher medal for registered participants present on race day.

A community 5K in Flossmoor with a parallel virtual 5K that raises funds and collects goods to support local families experiencing hidden homelessness and provide school supplies for homeless children.

Multiple endurance trail distances on a flat, crushed gravel section of the Des Plaines River Trail, starting and finishing at Half Day Forest Preserve in Lake County, Illinois. The marathon is a Boston Qualifier and the event runs each Oct..

Trail run at Saw Wee Kee Park on October 17, 2026, over soft, twisting trails with variable footing. Bib-timed waves, part of a four-race series with collectible medal pieces and seasonal swag.

Timed trail races at St. Patrick's County Park near South Bend on October 17, 2026. Options include 24 hour, 12 hour and 6 hour races on mostly dirt and grass trails with short asphalt crossings.

Soul Crusher is a trail race in Crystal Lake, IL offering 10 mile and 5 mile options on single track forest trails with looped sections and occasional extra mileage. Packet pickup is available the day before and a 3 hour 30 minute cutoff ap..