3'20"/km = 18.00 km/h · 11.18 mph

1 track lap = 1'20"0

At 3'20" per kilometre you run 18.00 km/h, or 11.18 mph (5'22"/mile). 5K in 16'40", 10K in 33'20", half marathon in 1h10'20", marathon in 2h20'39".