I've been walking to work for over 2 years now. My current commute is a bit over a mile, and it takes me a bit more than 30 minutes. So 5 miles is easily 2 hour

I've been walking to work for over 2 years now. My current commute is a bit over a mile, and it takes me a bit more than 30 minutes. So 5 miles is easily 2 hours, even if you have relatively long legs and walk quickly.