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.
This demanding training run will give you the confidence that you're ready to tackle your marathon goal.
The ultra-inspired sports utility bags have a multitude of uses beyond the trails.