Kelly Gneiting broke the Guinness World Record for "Heaviest Person to Complete a Marathon" by crossing the finish at the Los Angeles Marathon on Sunday.

The former U.S. sumo champion, who weighed in at Dodger Stadium on Sunday morning at exactly 400 pounds, finished the race in 9 hours, 48 minutes and 42 seconds.

Gneiting, of Ft. Defiance, Ariz., walked the last 18-plus miles of the race after jogging through the first 8 miles.

Markos Geneti won the men's event, setting a Los Angeles Marathon record with a time of 2:06:35. Buzunesh Deba gave Ethiopia a sweep, taking the women's race in 2:26:34.

Information from The Associated Press contributed to this report.