- 4015 Erie Ave, Sheboygan, WI 53081
The Old Plank Road trail begins at the Erie Avenue trailhead and runs west for around 21 miles to the county line, where the trail continues into Fond du Lac County. The trail consists of flat areas and gently rolling hills. There are four trailheads and various points of interest along the route. The address listed is for the Old Plank Road Trailhead Park.