Rachel Entrekin, 34, set a course record of 56 hours, 9 minutes, and 48 seconds, beating her previous time by 7 hours.

Rachel Entrekin had twice crossed the finish line as the top women's finisher at the Cocodona 250. On Wednesday, she beat the entire field — consisting of men and women — to win the grueling ...

A runner participating in a 250-mile ultramarathon in Arizona died after experiencing a medical emergency, according to race organizers.

Add Yahoo as a preferred source to see more of our stories on Google. An ultra runner in the Ultra tour du Mont Blanc descend the Grand Col Ferret into Switzerland An ultramarathon is a very different ...

PRESCOTT, Ariz. (AP) — A participant in a grueling 250-mile ultramarathon on trails across northern Arizona died Tuesday after experiencing a medical emergency, race organizers and local law ...

Organizers said the Cocodona 250 will continue in honor of the runner, who was participating in a race that stretches through the desert of Arizona ...

Add Yahoo as a preferred source to see more of our stories on Google. 1.It's so much better to run with a friend than to run solo. Last year, my first year running the Burning Man ultramarathon, I ran ...

This is the first piece in a two-part article regarding the GRC Perimeter Relay and Ultramarathon. In the Guam Running Club ...