4'50"/km = 12.41 km/h · 7.71 mph

1 track lap = 1'56"0

At 4'50" per kilometre you run 12.41 km/h, or 7.71 mph (7'47"/mile). 5K in 24'10", 10K in 48'20", half marathon in 1h41'58", marathon in 3h23'57".