100mi ultramarathons in Wisconsin, United States in 2026

Mostly rail trail course connecting Belleville, WI to Orangeville, IL, passing through small towns and scenic stretches with frequent aid stations

Rugged Ice Age Trail route through Chequamegon-Nicolet National Forest, featuring glacial landscapes, tranquil forests, and open prairies

Nordic Blue loop course with 1,500 feet of elevation per 9.19-mile loop, rolling trails, and Wisconsin’s variable weather