The same addictive personality that dragged the 32-year-old down a dark road of alcoholism has fueled a fast rise to success on the trails.
Make this tried-and-true marathon-specific session work for you!
Here are nine things you may not have known about the fastest marathoner in history.
There's not a cut-and-dry answer, but there are warning signs that your shoes need replacing.
Learn why splitting up your long run occasionally could be beneficial long-term.
The 29-year-old, 2:18-marathoner from Mammoth Lakes won the U.S. 50K trail title on Sunday in his first ultramarathon attempt.
Mario Fraioli advises a reader who wishes to attempt running a half marathon on only five weeks of training.
Get used to pace changes in a race with this interval workout.
America's fastest marathoner puts an end to his self-coaching experiment.
Being a vegetarian doesn't mean you can't get the necessary protein your body needs.