The Sugar River State Trail is a 24-mile (39 km) long, 265-acre (107 ha), recreation rail trail in Wisconsin.
This trail connects four communities: New Glarus, Monticello, Albany and Brodhead. The limestone-surfaced trail is on an abandoned railroad bed, and is used for bicycling, hiking, and snowmobiling.The Sugar River State Trail is part of the Aldo Leopold Legacy Trail System. It also hosts a 9-mile portion of the Ice Age Trail.