Nike shoe debate rages as runners weigh advantages at U.S. Olympic trials

FILE PHOTO: Athletics - Dubai Marathon - Dubai, United Arab Emirates - January 24, 2020 General view of an athlete holding Nike Vaporfly shoes after the race REUTERS/Christopher Pike

ATLANTA (Reuters) - A debate over Nike's record-breaking distance footwear raged on ahead of Saturday's U.S. Olympic marathon trials, as the shoe's buzz-worthy technology continued to raise questions over whether it offered an unfair advantage to runners.

The Nike Vaporfly shoe captured the spotlight in October when Eliud Kipchoge broke the two-hour marathon barrier wearing a pair, and various versions of it have featured in other record-smashing runs since.