Today’s the ultimate showdown between Nike’s two flagship running shoes: the Alphafly vs. Vaporfly! These shoes have ...

Both wear the same controversial shoes Nike's controversial Vaporfly shoes powered the world's 2 fastest marathoners to victory. When I tried them, it felt like running on rocking horses.

Eliud Kipchoge, who holds the world marathon record, donned a Vaporfly prototype last month when he ran the first sub-2-hour marathon ever. In fact, the $250 neon shoes (they come in bright green ...