Yohann Diniz

Diniz set the 50km world record of 3:32:33 at the 2014 European Championships in Zurich, a mark unlikely to be challenged now the distance has left the championship programme. He won the 2017 world title in London by more than eight minutes and three European titles, yet his Olympic record is one of frustration, including a collapse mid-race in Rio from which he still got up to finish. He is the purest example of front-running aggression in the walks.