To promote the United Airlines Rock ‘n’ Roll Running Series in Washington DC, United ran a 2-day sweepstakes during the event. Prizing included a chance to win the grand prize of 2 United Airlines international round-trip travel certificates in addition to 4 sets of 2 United Airlines domestic round-trip travel certificates. Entrants could enter in person at the event using iPads or by scanning QR codes on posters at the event and entering on their mobile devices.