A controversial Nike sneaker worn by 2 record-breaking marathon champions is at risk of being banned. A decision may come within weeks.

A controversial Nike sneaker worn by 2 record-breaking marathon champions is at risk of being banned. A decision may come within weeks.In 2019, 31 out of 36 major marathon podiums were claimed by athletes who'd worn Nike Vaporfly running shoes. The shoes have not been banned — yet.