They are give you directions of trails in and around Georgia as well an easy to follow summary of each trail describing length, type of trail and they also provide ratings on easy or hardness of the trail.
As an add bonus they also provide information about the area the trail is in and histories of that area.
If you are in to biking trails they also have listings of a few of those: http://www.georgiatrails.com/gt/Bike_rides_in_Georgia