When American 200-meter Olympian Kenny Bednarek powers around the curve of the Paris Olympic track ... do the 100-meter shoe.” The Nike Maxfly 2 is an updated sprinter's spike designed with ...

s spikeless track shoes, featuring a honeycombed carbon fiber outer sole, eschewing metal spikes. “Did you really say you can run in these shoes?” said Kiryu, the first Japanese to run the ...