Which Shoe Was Ruth Chepngetich Wearing During Her World Record?

Her shoe of choice? The Nike Alphafly 3.

The marathoning super shoe, which was released in January of this year, retails for $285.

Asics and Brooks athletes also had good days in Chicago.

John Korir ran a personal best of 2:02:44 to win the men’s race. He was seen sporting a new Asics prototype shoe that we speculate is the Metaspeed Sky 4.

John Korir won the race wearing an Asics prototype.

Other high-performing Asics athletes at Chicago included Americans Lindsay Flanagan, Emma Bates, and Sara Hall. Flanagan was the second American to cross the line, posting a 2:23:31 for ninth place. She and Bates (11th in 2:24:00) were both wearing the Metaspeed Edge 4 prototype known as “ME4 TYPE-P” on the World Athletics shoe database. It was approved for competition by World Athletics on September 18. And Hall, who was 18th, wore the Metaspeed Edge Paris, which is available to the public.

Susanna Sullivan (center) was the top American woman to finish at the race. She is pictured here with fellow top three American women finishers Lindsay Flanagan (left) and Emma Bates (right).

Brooks also had a solid presence in the top 10. Susanna Sullivan led the American women with a 6th place finish in 2:21:56. She was sporting a development version of the Hyperion Elite 4. Also lacing up the shoe were CJ Albertson (seventh in 2:08:17) and Zach Panning (10th in 2:09:16).

CJ Albertson finished seventh overall wearing a Brooks prototype.

Theo Kahler is the news editor for Runner’s World. He is a former all-conference collegiate runner who’s based in Easton, PA. Previously, he worked as the newsletters editor at Runner’s World, Bicycling, and Popular Mechanics.