The United States won gold in the women's 4x400m relay race Saturday night at the Summer Olympics, and to say they won in dominating fashion would be an understatement to domination.

Team USA won by nearly a full four seconds, finishing in 3:16.87. By the second lap, there was little doubt which foursome would win gold, and by the beginning of the third lap, that doubt had been removed and the other seven countries were racing for second.

Russia won the silver (3:20.23) and Jamaica finished third to take home the bronze. It's the third consecutive Olympics that the U.S., Russia and Jamaica have gone 1-2-3 in the event. And for Team USA, it's their fifth-straight gold medal.

The win gave Allyson Felix, who ran a blistering 48.85, her third gold medal of the Summer Games (she also won the 200m and added gold in the 4x100m). And for Sanya Richards-Ross, the anchor leg, it's her second gold medal in London (400m).

For more on the Olympics, check out SB Nation's London 2012 Olympics Hub.