Trail Running calendar near Byron 2025-2026

Take on ARKTOS Feb 28 to Mar 1 2026, a winter loop ultra in Wisconsin's Southern Kettle Moraine. Run solo or with a team of up to 4 in 6 Hour, 12 Hour or 20 Hour timed loops for cold weather challenge and community fun.

Run the twisty winter trails at Saw Wee Kee Park with bib timing and wave starts; terrain can shift from muddy footing to wildflower lined sections. Part of a four race series where each finish earns a medal piece and seasonal swag.

Muddy Shamrock at The Forge in Lemont is a scenic but technical trail race with half and quarter options over wooded single and double track, rocks, roots and mud. Chip timing, a race shirt, age group awards and a festive post race party aw..

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.

Join the Earth Day trail run at Veterans Acres in Crystal Lake offering 50K, 15 mile and 5 mile options on a rolling 5 mile single track loop around the pond. Enjoy homemade aid station treats and a friendly, eco minded race atmosphere.

Run 10K, 25K, 50K or 50 Miler loops at Deer Grove Forest Preserve West in Palatine. Mostly wide non technical trails, a single aid station, pacers allowed for 50 Miler after four loops, and on course shenanigans promise a fun day.

Join the Saw Wee Kee Spring Trail Run on April 25, 2026 at Saw Wee Kee Park for a scenic, twisty course over soft spring trails that may be muddy or flower strewn. Wave starts, bib timing and a piece of a collectible multi part medal.

Run rolling prairie, single track and sandy hills at the Donald Dash in Donald County Park near Mount Horeb, WI. Choose 5 km or 15 km and support Friends of Donald Park as proceeds fund trail upkeep.

Test your limits on scenic loops through Southern Kettle Moraine at the Prickly Pine Jackpot 24 Hour in Dousman, WI. Choose 3, 6, or 9 mile loops for 6, 12 or 24 hour solo and relay races and chase a cash jackpot for top finishers.

Take on a 4 mile loop through Wolf Road Woods in the Palos Preserves with 7 hour and 11 hour timed options. Enjoy rolling single track, hearty aid station fare and live lap scoring as you chase your endurance goals.

Rumble on the Ridge is a Last Person Standing run where runners repeat The Drifty Mile loop of about 1 to 1.25 miles with 250 ft of climb and a 20 minute cutoff. The course changes yearly and direction flips every four hours.

Run scenic resort trails and ski hills at Chestnut Mountain Resort in Galena with sweeping views across the Mississippi into Iowa and Wisconsin. Choose 4 hour or 8 hour timed loop formats, enjoy a post race meal and lively after party.

Join the Sugar Badger 50/50 and Half in Belleville, WI for flat, scenic out and back runs on the Badger State and Sugar River State Trails with 50 mile, 50K and half marathon options. Expect trestle bridges, a quarter mile tunnel, aid stati..

Backyard Nonsense on June 6, 2026 invites runners to scenic trails at Richard Bong State Recreation Area with rolling hills and lakeside sections. Enjoy a welcoming community and choose timed options from 3 hour to a full 24 hour ultra.

Enjoy the Saw Wee Kee Summer Trail on June 6 at Saw Wee Kee Park, featuring soft, twisty trails, rolling elevation and seasonal surprises from mud to blooms. Bib timed wave starts, seasonal swag, and a piece of a four race series medal.

Kettle Moraine returns June 13 and 14 2026 in LaGrange Wisconsin, offering 100 mile, 100K and shorter trail distances with plenty of Ice Age Trail scenery. The 100 mile serves as a Western States qualifier, making this a prime summer ultra.

Run the scenic Ice Age Trail near Rice Lake in Whitewater, Wisconsin on June 20, 2026. Choose a 10K, 21K half marathon or 50K and tackle varied, rewarding single track through classic summer forest scenery.

Tackle rugged trails at the GristMill Grind in Franklin Creek State Natural Area, featuring 5K and 10K routes with creek crossings, bluffs and forest canopy. All proceeds support Franklin Creek conservation and park improvements.

Test your limits at Last Dot Standing and the 24 hour and 48 hour races in Belleville, WI September 18 to 20, 2026. Run the scenic out and back course, chase mileage buckles and cash prizes in this endurance festival.

Run the scenic 104 mile Hennepin Canal State Trail from Sterling to Colona on a flat and fast all trail course. Choose 100 mile relay, 50 mile, or Mule 50K night run and earn memorable finish swag.