World record holder Mary Keitany retires due to injury

One of the best female marathoners of all time says farewell to the sport

Races to rewatch for a shot of motivation

These races are bound to get you itching to go out for a run

Shalane Flanagan thanks the family of her tissue donor

The 2018 New York Marathon third-place finisher and 2017 champion has given a significant boost to organ and tissue donation