The men's 4 × 400 metres relay event at the 1948 Olympic Games took place on 6 and 7 August. The United States team won the final with a time of 3:10.4. Records Prior to the competition, the existing World and Olympic records were as follows. Schedule All times are British Summer Time (UTC+1) Results Round 1 The first two teams in each heat qualified for the Final. Heat 1 Heat 2 Heat 3 Final Key: DNF = Did not finish References Men's 4x400 metre relay Relay foot races at the Olympics Men's events at the 1948 Summer Olympics