Rice, who ran a world record in the marathon in the 75-79 age group last year, has an incredibly high V02 max.

Kiplimo averaged around 13.86 miles per hour or one mile every 4 minutes and 20 seconds, breaking the world record for the ...

24-year-old Kiplimo of Uganda shared that everything ... When breaking this recent world record for the fastest half-marathon time, Kiplimo averaged around 13.86 miles per hour, which is about ...