9x800-6.2 miles

Ran each interval at a 9:53 pace, so if Yassos really work, I'm on track for a sub-4 hour marathon. We'll see. I felt good, was only going to go seven intervals. I also cut down my recovery time. I was using .25 miles, but really .15 was more than enough. Ran in the new performance shoes again and feeling a little sore, need to get back in my neutral shoes for a couple of runs.