If you haven't heard of the Warrior Dash you have two things to do. First, go to www.warriordash.com and find out where the closest one to you is and second, DO IT! I did the one in Ohio on June 5 and it fulfilled and even exceeded my expectations. SO. MUCH. FUN. People of all sizes and athletic ability did it so don't let that stop you!
Here is some documentation of the most difficult and fun 3.1 miles I've ever ran: