Hertfordshire's Olympic champion cyclist Laura Trott has helped to launch the cycling equivalent of the London Marathon alongside London Mayor Boris Johnson.
The double gold medal winner has helped launch an annual cycling event weekend for London which will include a 100-mile "Marathon" bike ride.
The Ride London event will be held for the first time next year.
"This will be a great way of getting people involved with cycling," said Trott, who took gold in the cycling team pursuit and omnium.
Trott has "owned up" to dating fellow double Olympic gold medal winning cyclist Jason Kenny, 24.
Mr Johnson, announcing the new cycling event in Westminster, joked that Trott and Kenny, adding their medals together, were 16th in the world Olympic medal table.
Members of the Welwyn Wheelers, Laura Trott's cycling club, cheered the Team GB rider as she became Olympic champion.
The Hertfordshire rider secured Gold in the Omnium with a stunning ride in the 500m time trial.
It was Trott's second gold of the games having already won the Team Pursuit.
Laura Trott is in second place in the women's omnium after four events, just one point behind the USA's Sarah Hammer.
The Herfordshire rider finished the 3000 metre pursuit in second place in 3 mins 30.547 seconds, picking up two points.
Trott will compete in the final two events this afternoon.
Mail bosses have celebrated cyclist Laura Trott's gold-winning exploits by painting a post box gold in her birthplace of Harlow.
And it's a case of double gold for the Essex cyclist as the Royal Mail will also paint a post box gold in Cheshunt where she now lives and trains.
Two more of the region's athletes start their Olympic campaign today.
Laura Trott of Harlow, goes in the heats of the women's team pursuit, while Milton Keynes athlete Greg Rutherford bids to qualify for the final of the men's long jump.