Synthetic vs dirt?

Question

let's say i'm running like a 400m in 58 seconds on a dirt track how much would u subtract from it if i would be running on a synthetic track

Answer 1

a few seconds, but i wouldn't expect to go under 50. but if you practice on a synthetic track a bit more you could see more improvement

Answer 2

I would think you would gain a couple of seconds, at least.

Answer 3

probably 1-2 seconds, not 5, a second is a lot of time in the 400m.

Answer 4

Dude 58 seconds is good, synthetic will boost it about 5, because it is so easy to run, dirt slows you down and synthetic will help thrust you. trust me