I believe you'll develop speed via strength work which includes hill running, either repeats, or running hilly courses as the Kenyans do on a steady basis.
The starting line of the New York Marathon is kind of like a giant time bomb behind you about to go off. It is the most spectacular start in sport.
My guess is many top athletes, distance runners included, use performance-enhancing drugs, enough so that the problem must be tackled.
If you want to win a race you have to go a little berserk.
