Exactly how far is 4 miles?

I am just about to change into my walking clothes and attempt to speed walk 4 miles. Actually, instead of dread I'm kinda jazzed b/c the kids are acting like total hoodlums and both Jason and I are ready to do things the DCF would definitely NOT approve of; so getting out of the house seems like a good option. Jason just got finished mowing the grass -- that's how much he wants out of the house.

I'll report back later. Jason's going to let me borrow "the watch" so I don't have to figure out when I make it 4 miles. Gotta love technology.