Listening to Sara Hall’s podcast and she says she only worn the new Asics prototypes during her London Marathon and the Marathon Project. She mentioned the extra cushioning really helps preserve her legs/cuts down on the pounding. She’s run 2:22 in horrid conditions in London and 2:20 on a flat course in these shoes.
If she had worn these at the Trials I think she’s on the team. How screwd was she that these weren’t ready for the Olympic Trials?