3'30"/km = 17.14 km/h · 10.65 mph

1 track lap = 1'24"0

At 3'30" per kilometre you run 17.14 km/h, or 10.65 mph (5'38"/mile). 5K in 17'30", 10K in 35'00", half marathon in 1h13'50", marathon in 2h27'41".