The men's medley relay was run for the first time at the 1908 Summer Olympics in London. The event consisted of 1600 metres being run by four athletes per team. Unlike the later 4 x 400 metres relay, however, the athletes had different distances to run. In the medley, the first two runners each ran 200 metres. The third runner ran 400 and the fourth ran 800. The competition was held on July 24, 1908 and July 25, 1908. 28 runners from 7 nations competed. The event was run in two rounds.