Using the yard - to - metre conversion system , his 47.9 time would be reduced to 46.4 .
Hoilett and his peers ran on dirt and grass tracks and over 440 yards , which is a little longer than the 400m .
Using the yard - to - metre conversion system , Hoilett 's 47.9 time would be reduced to 46.4 .
Hoilett and his peers ran on dirt and grass tracks and over 440 yards , which is a little longer than the 400m .