Depends on the terrain. Last year there was a case in the local news of a guy who died out in Death Valley when he tried to hoof it after a breakdown. His objective was less than 10 miles from his car.
I know something of the terrain and even without looking at a map my first reaction to what he attempted was that it would be impossible even by survival standards. I do not believe the terrain could be traversed even with mountaineering gear. (Too much of it is loose material near the maximum stable angle--it won't bear weight.)
I know something of the terrain and even without looking at a map my first reaction to what he attempted was that it would be impossible even by survival standards. I do not believe the terrain could be traversed even with mountaineering gear. (Too much of it is loose material near the maximum stable angle--it won't bear weight.)