Smile Train, the world’s largest cleft-focused organization, and Team Empower, its signature endurance fundraising program , head to London for the TCS London Marathon, the world’s largest annual fundraising event . Together with 50,000 other runners, celebrity couple Tim Yap and Javi Martinez, along with businessman and legislator, Cong. Sam Verzosa take on the challenge of the 26.2-mile course for a good cause.