DeKalb County Trail is built on a former interurban (electric railroad) line. Before the turn of the century, as the country transitioned from horse and buggy to the automobile, Indiana interurban systems were the most prolific interurban systems in the US. In the 1930s, five major interurban lines in Indiana, under the control of Midland Utilities and owned by Samuel Insull, merged into one entity, forming the Indiana Railroad. The Indiana Service Corporation (one of the five) ran through 12 Indiana counties, including DeKalb County. During the 1930s, interurban lines were abandoned one by one, mainly due to the Great Depression, as well as, competition from automobiles and buses. By 1941, only two lines remained in operation and on September 8, 1941 a fatal head-on collision of two high speed interurban cars ended the interurban in Indiana.
DeKalb County Trail is located in northeast Indiana between the two towns of Auburn and Waterloo. The trail was built in 1976 and is considered the first rail-trail in Indiana. It is a four mile asphalt corridor allowing for walking, bicycling, inline skating, cross country skiing and is wheelchair accessible. The south end of the trail begins at Morning Star Road at Greenhurst Country Club and proceeds northward along Main Street in Auburn. The trail passes by a hand full of homes, farmland, open fields, and a few businesses, as well as DeKalb High School and Middle School. The trail continues around Cedar Street, in Waterloo, to Center Street and travels due north to the railroad tracks at Lincoln Street where trail parking is available at the Amtrak Station.