We caught up with the 28-year-old ahead of Sunday's New York City Marathon.
Your footwear needs often depends on the terrain you're running on.
Weaving through other runners to hit your goal split will almost always come back to bite you.
The 29-year-old Hansons Brooks athlete ran a two-minute PR to finish as the top American at the Chicago Marathon.
Tempo runs are an important part of a solid training plan.
The 26-year-old marathon debutant won his first national title in impressive fashion on Sunday.
Good finishing speed only benefits those who have the strength to use it.
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.
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.