Okay so it’s not a secret, if you look at the stats it’s easy to see, the stack height of the Nike Vaporfly is 39mm at the heel (that’s the same as the Hoka Bondi) yes, that’s a huge shoe. Now why is this a problem? It doesn’t seem to be a problem for Kipchoge, Rupp, Hasay, and literally thousands of semi elite/hobby marathoners, and it’s not. But what about the 5% of people like me? See I raced in the 4% on 3 separate occasions, 2 halves 1 full, all 3 times my quads were completely destroyed afterwards. I’m not complaining that the 4% didn’t make me as fast as Rupp, in fact I equaled my PR in one of those halves, but in the full my quads and hamstrings got so bad I was forced to drop out at mile 23.5. Didn’t take long for me to realize that problem was the specs of the shoe, see I typically run in New Balance Zante, Saucony Freedom, and race in New Balance Hanzo. All those shoes the heel is 20mm or less off the ground, while the 4% the heel is 39mm off the ground, that’s double! I’ve seen pictures and videos of myself racing in the 4% and my foot strike and form is off. So if you’ve found the 4% didn’t work for you and you wear more minimal shoes, you’re not alone. I’m patiently waiting for Saucony to release their prototype that Jared Ward uses, as well as Sketchers who made the razor hyper with a carbon plate for Ches. These two shoes will have low stack heights and lower heel to toe off sets. Brooks Hyperion proto will have very similar dimensions to the 4% so that won’t work for me. If anyone else has had this problem please let me know and share what shoe you’ve turned to.
Thanks.