10K in 35 min: 5'38"/mile

1 track lap = 1'24"0

To run a 10k in 35 min, hold 5'38" per mile, i.e. 10.65 mph (3'30"/km). At that pace: 5K in 17'30", 10K in 35'00", half marathon in 1h13'50", marathon in 2h27'41".