I was hoping to do the 8 middle miles at 6:50 but a few miles in I realized that wasn't going to happen today. I tried to back down to 7:00 pace but after 2 miles of that realized I was pushing too hard and decided to call it a day and just do 3 cool down miles. I figured it was better to quit before I hurt myself and live to run another day. My legs felt fine, just tired I guess.