Walking 4:30:00 
Oops -- arrived at Current River SP one week early for SC trail work!
Instead will hike trails for 2 days and probably return next week. Hiked Current River Trail from Echo Blubb SP to Current River SP, plus most of 4-mile loop in CRSP. It felt good to recognize the 50 yards of trail I worked on last year - "My flat stones!" :)
The 12 walk-in/tent campsites at Echo Bluff SP are amazing: isolated on wooded hillside, wooden platform with table at each site.