(Minnesota)
Root River State Trail and Harmony-Preston State Trail are a 60-mile (97 km) paved multi-use rail trail system in the driftless area of southeast Minnesota. The trail system consists of two main segments, the Root River segment, and Harmony-Preston Valley segment. The trails are used mainly for bicycling, hiking, and inline skating in the summer, and for cross country skiing in the winter. Much of the trail, especially the Root River segment, is built along a former Milwaukee Road railbed following the contours of the Root River valley. The trail was originally paved in the 1980s, and repaved by June 2008. (Ref: https://en.wikipedia.org/wiki/Root_River_State_Trail)