Stephen Fox occasionally goes on a long mountain run, like the one between Telluride and Ouray, called the Imogene Pass Marathon over the highest mountain pass in the United States, over 13000 feet, where there is one point where you have to jump across a 10 feet wide rouring mountain creek rushing by about 40 miles an hour, and if you fail, you would be soon falling over a 300 foot cliff in a beautiful waterfall. Still, he would rather have such conditions than the certain doom and the doubtlessly shorter life after running a marathon in Beijing's carbon monoxide, sulfur dioxide, nitrous oxide, and ozone. At 60, he now prefers the Mountain Bike.
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