The WhistleStop Marathon and Half Marathon is an annual road running competition held in October in Ashland, Wisconsin, in the United States. The course runs point-to-point and is held on the Tri-County Corridor, a rail-trail now paved with limestone gravel. The course stretches from two miles east of Iron River, Wisconsin and features ten re-decked railroad trestles, wetlands, trout streams, Chequamegon National Forest woodlands, dairy farms, and residential neighborhoods. The finish is located near Ashland's Bay Area Civic Center. The WhistleStop Marathon is USATF certified (#WI98019WG).