Dr. Bermingham, 44, has embarked on a yearlong training program to prepare for the Roving Race, a grinding, weeklong outdoor competition that changes location every year. In November, Dr. Bermingham heads to Patagonia, where he will run 25 miles a day over rough terrain for four days—followed by a 50 mile overnight stretch. (The final day is a mere 6 miles.) Organizers expect 250 to 300 participants from 40 countries.
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