John Nickles (born 1964, Washington DC) is an elite American Triathlete and endurance athlete. Among his accomplishments, he won the World Champion Title in the 1999 Hawaii Ultraman World Championship . In 1994 he set an Ultra Marathon Cycling Association world record  when he traversed the Blue Ridge Parkway from Cherokee, NC to Rockfish Gap, VA (470 miles) by bike in 31:30 hours. In 1993 he was a member of the second place team in the Race Across America, which finished the 3000 mile race in 6 days 6 hours.
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