Nike Alphafly and Vaporfly shoes are still allowed in sanctioned races but there is a 40mm limit on sole thickness (stack height). https://www.therunningweek.c

Nike Alphafly and Vaporfly shoes are still allowed in sanctioned races but there is a 40mm limit on sole thickness (stack height). https://www.therunningweek.com/post/carbon-plate-running-shoes-do-they-really-make-you-faster https://www.therunningweek.com/post/carbon-plate-running-sho...