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David Archuleta: Singing & Signing at EKS Challenge

David Archuleta is all smiles at the 1st Annual Eunice Kennedy Shriver Challenge on Saturday (October 23) in Washington, D.C.

The 19-year-old performed at the event, which featured more than 700 participants who walked, ran, and biked to help raise money for the Special Olympics and Best Buddies International.

David flew into the nation’s capital on Thursday night and has been touring the town.

“At the National Geographic headquarters. It’s amazing! All the research that goes into the stories they do,” he tweeted.

David also dropped by Georgetown Cupcake, which he described as “awesome!”

You can also go here for more pics of David signing and hangin' by the food!