The team of Kyle Merber (1200m), Brycen Spratling (400m), Brandon Johnson (800m) and Ben Blankenship (1600m) improved on the nine-year-old record of Kenya, thanks in part to an outstanding last leg by Blankenship in 3:51.24.
The victorious USA team will receive a world record bonus of US$50,000.
*subject to the usual ratification procedures