Mixed 4x400m Relay World Championships 2024 Calendar. Bryce deadmon of united states in action during heat. The usa quartet set a world record time of three minutes 08.80 seconds to take the mixed relay title, with gb crossing the line in a national record 3:11.06 after bol.

They also hold the olympic record of 2:55.39, set at the 2008 beijing. Ireland’s mixed 4x400m squad of cillin greene, rhasidat adeleke, thomas barr and sharlene mawdsley smashed the national record for the second time in two.