“Now I say that if you run more than 15 miles a week, it's for something other than aerobic fitness. Once you pass 15 miles, you do not see much further improvement.” IfsRunningWeekImprovementMiles Author:Kenneth H. Cooper
“You have to run 75 to 100 miles a week if you expect to break the four-minute mile.” IfsRunningBreakFourWeekMinutesMiles Author:Kenneth H. Cooper
