6'20"/km = 9.47 km/h · 5.89 mph

1 track lap = 2'32"0

At 6'20" per kilometre you run 9.47 km/h, or 5.89 mph (10'12"/mile). 5K in 31'40", 10K in 1h03'20", half marathon in 2h13'37", marathon in 4h27'14".