Designed by mountain bikers and built by the International Mountain Biking Association, the Allegrippis Trail network features more than 30 miles of premier singletrack. Arranged as a series of stacked loops, the 24 trails in the system are rated "easy", "moderate" and "challenging", offering riders the chance to create a route that fits their riding style and time constraints. The trails feature rollers, banked turns, challenging climbs and long winding downhills that take riders along high ridges, through deep woods, and to the shores of Raystown Lake. Challenging trails in the Allegrippis Trail network include Allegheny, Ray's Revenge, Sidewinder and Hydro Loop. These trails - designated by their black color code - feature challenging climbs, banked turns and long downhills that wind from high scenic vistas to shores of Raystown Lake.