For those who enjoy a run of some distance across a variety of terrains, this application is definitely worth a look. With Trail Runner, users can create a geographic display of their workout area, plan routes interactively, and also export route descriptions onto their iPod. While the application does not actually contain digital maps itself, it does offer ample directions and instructions on where to obtain such maps online. This version of Trail Runner is compatible with all computers running Mac OS X 10.4 and newer.