Trail Running calendar near Janesville 2026-2027

An out and back on the Badger State and Sugar River rail trails in Belleville, WI on May 23, 2026, offering 50 mile, 50K and half marathon options with aid stations, photos, pizza and beer provided.

A multiwave obstacle course at Byron Motosports Park offering 10K, 5K, ruck, and kids divisions, with Special Forces and Endurance competitive formats and team entry packs available.

Dirt Circus Chicago on May 30, 2026 in Crystal Lake, IL gathers the local trail running community for a social run, expo, food, raffle, and vendor booths. Two route options and a city specific t shirt preorder are available.

A timed trail event at Richard Bong State Recreation Area on June 6, 2026, featuring multiple timed options on .75 mile loops around Vern Wolf Lake, marked trails, rolling hills, and hourly on-course challenges.

A trail running event at Saw Wee Kee Park in Yorkville on June 6, 2026. The soft, twisting path is bib timed with staggered starts and is part of a four run series that awards pieces of a 2026 medal and seasonal swag.

Blue Mound Trail Run on June 6, 2026 in Blue Mound State Park features 10K and 18K trail races on single-track and ski trails, and serves as a fundraiser for Friends of Blue Mound State Park.

A trail race at Hickory Knolls Nature Area offering 5K, 10K and a 10K two person relay on marked dirt grass and gravel paths; proceeds support the St Charles Park Foundation.

An annual June endurance trail event featuring 100 mile, 100k, 50k and 38 mile options on mainly Ice Age Trail terrain. Entry for 2026 is by lottery with an ordered waitlist and early invites for rollovers and volunteers.

Experience an authentic cross country race on a purpose built grass course in Geneva Illinois. Run as an individual or part of a team on this wide professional grade venue featuring rolling terrain and a classic atmosphere.

A Spartan Trail race on June 20, 2026 at Rice Lake Nature Trail in Whitewater, WI, using a scenic out and back section of the Ice Age Trail. The route offers three distances and varying trail surfaces from smooth to technical.

Trail 5K and a children's 1/4 mile at Kishwauketoe Nature Center in Williams Bay. The grass trail course passes through hills, woods and prairie, includes a water stop, parking across the street, and awards for top finishers.

A trail running event at Devil's Lake near Baraboo, WI on July 11, 2026, offering distances from 10K to 50 miles, marked courses with aid, post-race food and a finisher medal.

A trail run and walk at Lapham Peak State Forest on July 11, 2026, raising funds for prairie management; events for adults and youth, first 100 registrants receive a T-shirt and run winners receive awards.

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.

MSRC XC 5k Classic is a cross country race at Verona Area High School on July 12, 2026. It includes a 5k and a 1.6 mile kids race, team scoring for teams of five runners, and awards across multiple age and team categories.

An overnight loop endurance event at Lowell Park in Dixon, IL where participants repeat a .411 mile paved loop for 6, 12, or 24 hours. Solo and three person relay options are available and the event is self supported.

A 10K walk/run on August 1, 2026, through the Nordic Trail System in Kettle Moraine State Forest with water refill stations, trail snacks, a cup-less policy, and donations supporting The Salvation Army.

Night trail races in Dixon Illinois on an approximate 5 mile loop with solo distances and a three person relay, single aid station, post race snack, and on site tees for all participants.

A community cross country event in Mount Prospect offering 1, 2 and 3 mile races. Entry is $25 and proceeds benefit the Little Giraffe Foundation.

A Scottish Highlander themed obstacle race in Pingree Grove, Illinois featuring 3K family, 5K and 15K heats with 20 to 30 obstacles, plus a torch lit night race and a haunted 5K. Spectator fee on-site is $10 and parking is free.