Wiggins' success followed compatriot Chris Hoy's victory in the one-kilometer time trial on Friday.
He had to complete the race under the time limit to do the time trial Tuesday.
WSJ: Taylor Phinney: This Is Not a Story About Last Place��Jason Gay
Wiggins sat on the chair at Hampton Court, Surrey, after winning the time trial.
BBC: Bradley Wiggins Olympic throne fails to sell at auction
And the final placings are likely to be decided on Saturday's time trial from Bordeaux to Pauillac.
The Swiss rider pulled out citing fatigue in the wake of his time trial victory in Beijing.
The time trial victory at Hampton Court Palace was his fourth Olympic gold and seventh Olympic medal.
BBC: Bradley Wiggins Olympic throne fails to sell at auction
At the Amgen Tour of California women's time trial Friday, Stevens won her first race since coming back.
Four of the events, the marathon, the walk, cycling road race and the cycling time trial, are free.
He didn't make the time cut for the day, which meant he couldn't compete in Tuesday's time trial.
WSJ: Taylor Phinney: This Is Not a Story About Last Place��Jason Gay
The race ends in Bern next Sunday with a 30-km individual time trial.
BBC: SPORT | Other Sport... | Cycling | Solo break nets win for Contrini
The cycling events continue Wednesday with time trial events for men and women.
Stefan Nimke, who earned a bronze medal in the time trial on Friday, and Rene Wolff made up Germany's trio.
It's likely the British cyclist Bradley Wiggins savors his 2012 Tour de France jersey over his time trial Olympic gold.
WSJ: 2012 London Olympics: Andy Murray Vanquishes His Doubters
The time trial course ended in front of the Colosseum, having taken the riders past the Vatican and the Circus Maximus.
The team have six newcomers, among them world time trial champion Santiago Botero, Giro winner Paolo Savoldelli and Australian Cadel Evans.
The peak traffic moment was on 1 August, when cyclist Bradley Wiggins won his gold medal in the men's time trial.
But there's also a time trial, and Wiggins is a contender there.
WSJ: Tour de France: The Brits Rule World of Wheels - Bradley Wiggins
Donegal woman Jennings will compete against the world's top women's riders in both the time trial and the road race in Canada.
BBC: SPORT | Other Sport | Cycling | McCann guarantees world place
Bradley Wiggins won gold in the men's time trial event which passed through Elmbridge and several Surrey towns before ending at Hampton Court.
At the beginning of the study, all participants were asked to complete a self-paced 10km cycled time trial as quickly as they could.
Coupons, price reductions and such can be very useful, especially when marketers are looking to produce maximum short term volume, or gain first-time trial.
Cummings also goes in the men's time trial, which is wide open following the withdrawal of reigning champion and Olympic gold medallist Fabian Cancellara.
McGee, who led in 2003 after winning the opening stage, and Armstrong are among the favourites for the 19km time trial which starts at 1440 BST.
BBC: SPORT | Other Sport... | Cycling | McGee bids to upstage Armstrong
The 30-year-old Landis cruised to victory on the Champs-Elysees, a day after regaining the leader's yellow jersey and building an insurmountable lead in the final time trial.
He has now won 11 world championship gold medals, having also won the kilometre time trial four times between 1998 and 2001 and the sprint in 2001.
BBC: SPORT | Other Sport | Cycling | GB sprinters claim bronze
The time trial victory, which passed through Elmbridge and several Surrey towns before ending at Hampton Court Palace, was his fourth Olympic gold and seventh Olympic medal.
BBC: Bradley Wiggins Olympic throne to help raise charity funds
The Scot, who never went to an Olympics, believes Wiggins can emulate his previous track success on the road, where he will also compete in the time trial.
CNN: Millar: Tour champ Wiggins will repay Cavendish in London
The race starts with a short team time trial in Venice on Saturday, with Stapleton's Team Columbia and the Garmin, Astana and Saxo Bank squads expected to feature.
Botero was the one man capable of pushing Lance Armstrong in last year's race when he surprisingly beat him in the first main time trial of the race.
"I will still race in the time trial on Wednesday but I have the gold medal I wanted and after that I will consider retiring, " said the Kazakh cyclist.
应用推荐