60km? As every good American man knows they should be able to walk 50 miles every day according to a certain deceased president (TR). It's the origin of the Keswick to Barrow charity walk.
The idea being that every military man in USA should be able to March 50 miles in 20 hours on 3 consecutive days. Of course some us marines took that further and did 3 days of such matches in 20 hours straight. Having done it, or the reduced 40 mile version they got forced into because of traffic out of Keswick, 9 hours stiff walk over Lakeland hills. I've done 50 milers in about 16 hours. That's when I wasn't exactly a trained individual. You certainly learn to look after your feet doing those distances and greater.
The idea being that every military man in USA should be able to March 50 miles in 20 hours on 3 consecutive days. Of course some us marines took that further and did 3 days of such matches in 20 hours straight. Having done it, or the reduced 40 mile version they got forced into because of traffic out of Keswick, 9 hours stiff walk over Lakeland hills. I've done 50 milers in about 16 hours. That's when I wasn't exactly a trained individual. You certainly learn to look after your feet doing those distances and greater.