The sole measures 12.6 inches (32 centimeters) long, which is the equivalent of a men's U.S. 14 or U.K. 13 size shoe today. "Could this one be the largest in the Vindolanda Trust collection?

However, larger sized shoes – such as Kipchoge's large 10.5s – have stack heights bigger than the standard ruling. This applies across both men and women's versions of the Alphafly.

ALBUQUERQUE, N.M. (KRQE) – If you’re wearing athletic shoes right now, you have a New Mexican to thank for helping design them. From Nikes to Brooks, Stan Hockerson revolutionized shoes. You ...