Heaviest Person to Complete a Marathon Weighed a Whopping 400 Pounds

This outrageous honor belongs to American Kelly Gneiting who weighed in at a fifth of a ton just half an hour before the 2011 Los Angeles Marathon began this past march. At such a weight, you might not tend to call a person ‘athletic’, but Kelly has also won a national championship in sumo wrestling. He managed to complete the race in 9 hours, 48 minutes, and 52 seconds! By that time he no longer weighed 400 pounds though – all that exertion during the marathon caused him to drop to 396.2 pounds!