Trail Running calendar near Williams Bay 2025-2026

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..

Celebrate the 25th anniversary 5K for Double "J" in Joliet on June 6, 2026 as participants run the Rock Run Greenway and finish at Cemeno's. Proceeds support the Pat Clark Cancer Foundation and registration includes a T shirt and 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.

Take on rolling hills and changing trail footing along a scenic Ice Age Trail section at Rice Lake Nature Trail in Whitewater, WI on June 20, 2026. Choose 10K, half marathon or 50K for a rewarding summer trail challenge.

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.

The Echo 136 is a 136 mile trail ultramarathon through the scenic Kettle Moraine and Ice Age State Trail near Whitewater, Wisconsin on September 25, 2026. Expect rugged singletrack, generous aid stations and a 55 hour time limit.

Take in wooded trail views at the Fall Into Fall Trail 5k in Janesville, then stay for live music, food trucks and beer and wine tasting at the festival. Run or walk a fun, scenic course and celebrate the season with community festivities.

Join the Haunted Highlander Assault Trail Run in McHenry on October 3, 2026 for spooky 5 km heats through haunted sets and animatronics. After the run enjoy a costume contest, bonfire, live entertainment and food.

Enjoy a fall run, walk and roll through 125 acres of prairie, ponds and fall color at Zachariah's Acres in Oconomowoc. Choose 5K, half marathon or a family one mile loop while supporting nature based programs for children with special needs..

The Wisconsin Trail Series will take place in Oconomowoc on Friday 16 October 2026. You can run between 5 and 21 kilometers.

Join the Jaimie Cox Memorial Run in Roscoe IL on October 17, 2026 for a family friendly 5K or 2 mile walk along the scenic Stone Bridge Trail. Run for a cause as proceeds support the Jaimie Cox Memorial Scholarship.

Run the Forge Trail Run Festival in Lemont Illinois on November 14, 2026 offering 10K, 20K Half Marathon, 30K and 60K distances. Single and double track plus gravel around the quarries and canal deliver varied, scenic and technical trails.