Loooking at the map, One would have had to find the few islands of high ground in the area. You have to get more than 60 miles before you are away from water of some sort.
I'm pretty sure I could walk 60 miles in 3 days , if I knew there was a hurricane chasing me. I've done 12 in 2 1/2 hours for the Army SFQT, and all I had chasing me then was the Sergeant Major.
bttt