What's the most miles that you've walked in one day?

[cpvr]

I actually work part time at a local park as a security guard, so I'm always working around my park when I'm on duty. The record amount of miles that I've walked in one day is 12. I've been averaging 11 miles a day for the past few days though. It's hard as hell to walk so much in Texas because its always so damn hot outside, but I manage to walk a lot all the time.

So, what's the most miles that you walked in one day?