Topic summary
Racing flats
Extracted from the Wikipedia article Racing flat.
Construction
Racing flats vary in weight, ranging from 230 g (8.1 oz) down to the mere 70 g (2.5 oz) of the women's New Balance 5000. Reducing the weight to obtain the natural feel for a runner can result in a shorter lifetime for the shoe. In general racing flats will last fewer miles before wearing out compared to trainers. A typical racing flat will last for about 150–300 miles.