Mary Wittenberg, the CEO of Virgin Sport Global, discusses the new company's initiatives to create major sporting events for the non-athlete. The company launched this year with with events in London, Westminster, and Oxford. Wittenberg notes that the creation of Virgin Sport came from the idea of combining sweat with the swagger of Richard Branson's Virgin. San Francisco's Fitness Festival will play host to a half marathon and a Twin Peaks Mile challenge, along with local art, food and a celebration of San Francisco culture. We also ask Mary for some inside information on what other U.S. cities might be next on her list.