In a post from August, I said:
I walk at just about three miles an hour. A little faster unencumbered over short distances, and a little slower carrying a pack over a 500-mile trek. If a square counts as 6 miles, simple math tells me that it takes 2 hours.
What I neglected to take into account was that all my walking and hiking has been on well marked trails and roads. How different is it when someone is traveling across unknown and unmarked wilderness?