More than 5,000 runners tested their stomachs during the annual Krispy Kreme Challenge in Raleigh.

The fifth annual charity race kicked off Saturday morning at North Carolina State University and raised $35,000 for the North Carolina Children's Hospital. To officially meet the challenge, racers had to run two miles to the downtown Krispy Kreme shop, eat a dozen glazed doughnuts and run back in under an hour.

Waves of runners spilled into the store's parking lot about 30 minutes after the race began, with the veterans shoving doughnuts into cups of water and quickly eating several at a time. A few with sensitive stomachs had to dash behind the gas station across the street.

The race went through 48,000 doughnuts and raised $35,000 for the North Carolina Children's Hospital.

 

Web Extras: NBC17 Sports Anchor Penn Holderness Takes Part in the challenge.
                How Do They Make Krispy Kreme Doughnuts? Click the videos to watch.