Took the shoes on a couple runs all track and treadmill and after much deliberation I have decided they do not work for me. The B13 would fill its slot until I find a suitable race shoe and if my pace slows down I find it causes me to overpronate and my legs are wrecked for days after. Great shoe and for speedwork it’s great and highly durable. Figured I would try to get these to some of the AP3 cult lurking out there