He helped Team USA bring home the gold at the World 24-hour Championships.
She continues to back barefoot running.
The returning champion hopes to win the grueling 56K race.
He is a legend from the "old school" of ultra marathoning.
Her mantra was "relentless, forward, progress".
The runners were filmed with a 10-pound camera.
His coach thinks he has a "gift" for distance running
One Canadian researcher is trying to find the answer to that question.
The race company is under increasing scrutiny for its staging of the event.
For ill-prepared runners, they can even be downright deadly.