Track & Field at the London 2012 Olympics (146 images)

Tianna Madison Carmelita Jeter, Bianca Knight and Allyson Felix of the USA celebrate after winning gold and setting a new world record of 40.82l at the London 2012 Summer Olympics on August 10, 2012 in London. UPI/Terry Schmitt

America's Morgan Uceny falls in the Women's 1500 metres final on the eighth day of the Athletics in the Olympics stadium at the London 2012 Summer Olympics on August 10, 2012 in London. UPI/Hugo Philpott

Turkey's Asli Cakir Alptekin wins the Women's 1500 metres final on the eighth day of the Athletics in the Olympics stadium at the London 2012 Summer Olympics on August 10, 2012 in London. UPI/Hugo Philpott

Carmelita Jeter (L) of the United States celebrates winning gold in the women's 4 x 100m Relay Final at the London 2012 Summer Olympics on August 10, 2012 in London. Jamaica took silver. UPI/Terry Schmitt