My biggest weakness as a endurance athlete has been in not drinking enough water after training, thereby racing sometimes while dehydrated.

My guess is many top athletes, distance runners included, use performance-enhancing drugs, enough so that the problem must be tackled.

Running is a very natural activity. If you get too caught up, you find yourself constantly seeking to make running something that it isn't. You should let it be what it is - a very simple activity. Running has become too complicated for many people and they wind up turning sour on the sport, or losing the focus of their direction.

Hills are terrific for running

I want to run until I can't run

I often lose motivation, but it's something I accept as normal.

Age 50 is a lot tougher than 40s