Have you heard about 1500m or 3000 m race ? (1000 metres make 1 kilometre and 500 metres make half a kilometre) So you can say — In a 1500 metres race people run —– km [toggle title=”Answer” float=”left” width=”100px” margin=”0 20px 20px 0″ status=”closed”] 1.5 km[/toggle] In a 3000 metres race people run —– …