Zack Price proposed this logical FKT route:
I was wondering if someone has heard of anyone attempting the loop consisting of the AT/Long Path/Shawangunk Ridge Trail. I estimate the total length would be somewhere in the vicinity of 106 miles (45 for the AT, 11 for the SRT, 50 for the Long Path). I am not too familiar with the LP, so maybe someone can share some insight (I'm talking to you Ken Posner). I would think it would feasibly be possible to do this route in under 30 hours, possibly under 24 hours for a fast ultrarunner.