Well it all depends on your physical condition, how much weight you're carrying, what the weather's like, what the terrain is like and quite a few other things.
The farthest I've gotten in a day was 30 miles with 50lbs on my back.
You can walk fo about 2 miles
That all depends on how many aisles you go down.
I was there for about 7 hours the other day and I walked 6.3 miles
You'd have to walk 500 miles, then walk 500 more.
3.8 miles = 611550.72 cm.
You will walk 8.04672 km
3.10686 miles.
3.2 miles
2.5k is 1.5 miles
about 532.5 miles
It is safe to walk any number of miles. Limited only by your stamina.
It depends on how fast you walk.