Death Valley, CA: On July 10-12, AdventureCORPS presents its legendary STYR Labs BADWATER® 135. Now in its 40th year, the world-renowned event pits up to 100 of the world's toughest athletes against one another and the elements. In scorching temperatures and at altitudes as high as 8,360 feet, ultrarunners from 19 countries and 21 American states will face off in a grueling 135-mile non-stop run from Death Valley to Mt. Whitney, CA. Widely recognized as “the world’s toughest foot race, “ it is the most demanding and extreme running race on the planet.
http://www.badwater.com/event/badwater-135/