The Western States 100 provides the perfect opportunity to research the affects of ultrarunning on the body, reports Allison Pattillo.
From racer to race director, Craig Thornley is taking it all in stride.
Check out these great shots from the most celebrated 100-miler in the world!
The runners were filmed with a 10-pound camera.
The 23-year-old is taking the ultrarunning world by storm.
We recap all this past weekend's big races. RunCenter starts now!
A lot more than training goes into a successful run at the Western States 100.
Top men take a wrong turn, adding more than a mile to the course.
Check out these great photos from the most epic ultramarathon in the world!