The men's Distance medley relay at the 2015 IAAF World Relays was held at the Thomas Robinson Stadium on 3 May. This was the first time the event was held at a World Championship level meet. The previous world best, set by a Kenyan team in 2006 at the Penn Relays was elevated to World Record status due to the inclusion of the event in the World Relays. The event takes in a 1200m leg followed by a 400m leg, then an 800m leg before finishing with a 1600m leg.