The 1977 IAAF World Race Walking Cup was held in Milton Keynes, United Kingdom, on 24–25 September 1977. For the first time, a new competition name IAAF Race Walking World Cup was introduced replacing the former Lugano Trophy. As in 1975, there was a women's 5 km race held as invitation event. Mexico was dominant in the men's events, taking the team title and the top two spots in the 20 km and 50 km events through Daniel Bautista, Domingo Colín, Raúl González and Pedro Aroche. Sweden's Siv Gustavsson won the invitational women's event.[1]