50 km walk

Athletics 50 kilometre race walk
Men's racewalk. Walker at right appears to be illegal in that both feet are off the ground, but an infraction is only committed when loss of contact is visible to the human eye.
Men's records
World	Yohann Diniz 3:32:33 (2014)

The 50 kilometre race walk is an Olympic athletics event. The racewalking event is competed as a road race. Athletes must always keep in contact with the ground and the supporting leg must remain straight until the raised leg passes it. 50 kilometres is 31 miles.

The men's world record for the 50 km race walk was held by Denis Nizhegorodov, through his race of 3:34:14 in Cheboksary in 2008, until it was beaten by Yohann Diniz at the 2014 European Athletics Championships in Zurich, in a time of 3:32:33.