A 400-pound former sumo wrestling champ, Kelly Gneiting of Arizona, now owns the Guinness World Record for "Heaviest Person to Complete a Marathon" after finishing the LA Marathon yesterday in 9 hours 48 minutes 52 seconds.

He told the Los Angeles Times that by the 10th mile he had no idea where he was and became delirious.

[ESPN; image of Gneiting (at right in giant diaper) via AP]