Zappos.Com Rock 'n' Roll Las Vegas Marathon

A couple dressed as Elvis Presley run northbound on the Las vegas Strip during the Zappos.com Rock 'n' Roll Las Vegas Marathon Sunday, Dec. 2, 2012.

A couple dressed as Elvis Presley run northbound on the Las vegas Strip during the Zappos.com Rock 'n' Roll Las Vegas Marathon Sunday, Dec. 2, 2012. by Steve Marcus