The Bartram Green Loop is a great route that heads through Georgia Forestry's managed pine forests. What this trail lacks in technical difficulty and scenic views is more than made up for in the fun factor!
There isn't much climbing and the tread is all machine-built, so there aren't lots of roots or rocks to contend with. This is a great trail to walk or trail run. You can get your heart rate up and keep it up for a fun run and a great workout.