Bradley Wiggins has made Guinness World Records history at London 2012 after becoming the first cyclist to win an Olympic gold medal and the Tour de France in the same year.
The British star dominated this afternoon's 44km ride to beat Germany's Tony Martin by 42 seconds, with fellow Brit Chris Froome taking the bronze.
The victory in his home city came just two weeks after the 32-year-old became the first Briton to win the Tour de France since it began in 1903.
Today's win also means Wiggins has set a new record for the most Olympic cycling medals won by an individual.
The Londoner has bagged four golds, a silver and two bronze medals over the course of his career, which also moves him one medal clear of former rower Sir Steve Redgrave as the most successful British Olympian of all time
The last person to win both the Tour and the Olympic time trial was Miguel Indurain - a boyhood hero of Wiggins.
While Indurain took gold in Atalanta in 1996, and won five consecutive Tours between 1991 and 1995, he was unable to complete the double in the same year.