Treadmill run at gym.
1 mile warm-up in 9:30
9.4 miles in 60 minutes. I started at 9 mph and went up .1 every five minutes. Counting the cool down, I did 10 miles in 1:04:49. I cheated though. During the run I consumned 20 oz. of Cytomax which, according to the side of the bottle "reduces perceived exertion by 20%" and "lowers lactic acid level during training by 40% and "reduces oxygen consumption rate by 11%.
I'm pretty sure that if I quadrupled the dose I could run a marathon in around 2:10 :)