The Abbott World Marathon Majors, originally known as the World Marathon Majors, is a championship-style competition for marathon runners that started in 2006. It comprises six annual races (five 2006–2011, four 2012) for the cities of Tokyo (starting in 2013), Boston, London, Berlin, Chicago and New York City (2006–11, 2013–present), a biennial race, the IAAF World Championships Marathon, and a quadrennial race, the Olympic Games Marathon.