Modoc, Hamilton Branch and Petersburg campgrounds are between 10 and 14 miles from Lick Fork Recreation Area (there is very limited camping at Lick Fork and it is first come, first served (you cannot reserve space in advance). Here are the links:
The Petersburg Campground is located next to the Bartram Trail - this trail system is not technically difficult and there is very little elevation change but you can ride for miles! sorbacsra.org/Trails/Bartram.htm