If I train to be able to run a 4:30 mile, how steep of a downhill would be required to run a sub 4 minute mile? Or would I need to get my track mile to sub 4:25 to stand a chance of breaking it?
If I train to be able to run a 4:30 mile, how steep of a downhill would be required to run a sub 4 minute mile? Or would I need to get my track mile to sub 4:25 to stand a chance of breaking it?