Don't limit yourself by what you think you can do. In long distance running the majority of the effort is mental, not physical. If I plan to run five miles and that is mentally what I am prepared for, that is pretty much as far as I can run. With the same conditioning, if I plan to run 26.2 miles, that is doable. I almost never run more than I am mentally prepared to run.
- Anne Rentz -
A Passion for Running