Blood, sweat, tears and joy
Ultramarathoners go through agony and ecstasy over arduous courses and in extreme weather conditions
Running 135 miles through the searing summer heat of Death Valley in California before ending the route with a cumulative rise of 17,000 feet to reach the slopes of Mount Whitney?
Slogging across four courses, each 150 miles long, in Chile, China, Egypt and Antarctica in what is known as the Four Deserts Grand Slam?
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