The World from PRX

endurance sports

Competitors run in the 2013 Badwater Ultramarathon in Death Valley National Park, California. The 135-mile (217 km) race, which bills itself as the world's toughest foot race, goes from Death Valley to Mt. Whitney, California. Temperatures can reach 130 d
Science
Ultrarunning tests the outer boundaries of human endurance, but doctors say it’s still safe
Sports
A Pioneer in Women’s Running on the 50th Anniversary of Her First Big Race