Trail Running calendar near Lake County 2026-2027

A fall trail event at Lapham Peak State Forest featuring timed 5K and 10K runs, accessible walk options, and a free 1K Smokey Bear run for children age 10 and under; participant shirts, awards, and post-event treats are included.

Trail races at Creekside Trails in Valparaiso on October 3, 2026: a 5K loop and a 30K team relay hosted by local firefighters.

A community 5k and a 54 yard dash on October 4, 2026 in Glendale with an out-and-back course on the Oak Leaf Trail. Registration includes all-day entry to Milwaukee's Original Oktoberfest at Old Heidelberg Park.

The Lockport Fire Foundation presents the second annual Fire Zone 5k, a community 5k run and walk on a marked loop of the Forest Preserve trail starting at Hassert Park. Registered participants present on race day receive a t shirt and fini..

Participate in a half marathon, 5K, or rucking event at Zachariah's Acres in Oconomowoc. Support nature based programs for children with special needs while exploring prairie trails and wildflowers.

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.

A loop-based trail ultra in Eagle, Wisconsin offering 6, 12 and 20 hour formats for solo runners or relay teams up to four people, set on three mapped autumn loops through the Southern Kettle Moraine Forest.

Trail races on the flat, crushed gravel Des Plaines River Trail in Lake County offering Half Marathon, Marathon, 50K and 50 Mile distances.

A 5K timed race and an untimed 2K through the hilly 144-acre Camp Triangle Hills at Crossroads YMCA, held as part of Fall Fest with family activities like rock climbing, archery, tractor rides and a petting zoo.

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.

Nature-based out-and-back event in Roscoe, IL offering a 5K run or 2 mile walk on mixed gravel and crushed limestone, starting at Roscoe Middle School and passing a water station twice.

Trail race in Crystal Lake on single-track loops of about 5 and 10 miles, marked course, race shirt and finisher medals; cup-less event.

National Sweetest Day at Nashotah Park on October 17, 2026 offers running, walking, and ruck events from a kids 1K to a half marathon. Entry fees vary and several events include post race treats.

Runs at Richardson Adventure Farm in Spring Grove include a 10K, two 5K options and a 1 mile Family Adventure Run through a corn maze with themed finisher medals and farm attractions.

A Halloween-themed trail event in Pingree Grove, IL on October 23, 2026 with multiple 5 km heats, haunted sets and animatronics, plus a costume contest, bonfire and food; spectator fee $10, free parking.

A trail ultramarathon at Red Gate Woods near Chicago offering 25K and 50K on a clockwise single track loop of about 5.5 miles, with staffed aid stations, course maps, and no pacers allowed.

Howloween 5K in Schaumburg is a chip timed 5K run or walk at Busse Woods that supports animal shelters. Pets may join without registration and a virtual participation option is available.

A Halloween themed nighttime run and walk at Lake County Fairgrounds in Crown Point on October 30, 2026. The event features a 5K and a non timed shorter course, costume prizes, awards, and entry to the Hometown Hocus Pocus Market.

Experience the historic Ice Age Trail during this autumn ultramarathon in the Southern Kettle Moraine Forest. Choose between 50k and 100k distances featuring on site branded wooden medals and scenic fall colors.

A multi-distance trail event in Southern Kettle Moraine State Forest offering ultra distances, a 50K and a 15K Fun Run, with aid stations, pacing rules, finisher awards, and proceeds funding forest projects.