7 Horrible Mistakes You're Making With running surfaces
https://speedy-wiki.win/index.php?title=Running_tracks:_All_the_Stats,_Facts,_and_Data_You'll_Ever_Need_to_Know
Asphalt - Now you would believe that asphalt is simply as bad as concrete, however it is not. It's in fact about 8 times "softer". The genuine issue with operating on asphalt roadways is not the solidity, but the