Elevation at center:
Drg Source Scale:
One of Illinois's best trails, Pere Marquette Challenge is located near Alton, IL. Trails' printable online topo maps offer shaded and un-shaded reliefs, and aerial photos too. Use topographic maps to find elevation, print high resolution maps, save a PNG, or just learn the topography around Pere Marquette Challenge. You can also get free latitude and longitude coordinates from the topographical map and set your GPS. Premium members can download or print any topo and cover more terrain when you map your Pere Marquette Challenge route ahead of time.