This Friends hike, available to Friends, friends of Friends, family, and anything on a leash, will offer three trails -- River Trail (1.3 mi), Swamp Trail (1.9 mi), and Sinkhole Trail (2.2 mi)  with a total of about 5.5 mi.  But these are loops, so those wanting a shorter walk can drop out at certain points.  Remember water, hat (even though this will be shady) and critter repellant!