Adena Trace (IN)
"The Adena Trace is 25 miles total in length and forms a complete circle around the southern half of Brookville Lake. In 2002 volunteers with the Hoosier Hikers Council and the American Hiking Society constructed the new Woodlands Trail to replace a portion on the east side of the reservoir that borrowed a road. Throughout 1998 and 2001 the HHC constructed the 11-mile Wolf Creek Trail on the western half of the lake, which completed the 25-mile loop in place today."
From the Hoosier Hikers Council Website