(CNN) -- Levi Leipheimer remained on course to win his third successive Tour of California title after winning the 24km sixth stage individual time-trial at Solvang to extend his overall race lead.
Leipheimer is homing in on his third Tour of California after winning the stage six time-trial.
The Astana rider came home eight seconds clear of fellow-American David Zabriskie to increase his overall advantage over Zabriskie to 36 seconds.
Australian Michael Rogers is up to third place overall, after finishing fourth on the day, while Lance Armstrong finished 14th -- one minute and 16 seconds behind team-mate Leipheimer -- to drop from fourth to sixth place in the overall standings, 1:46 off the lead.
Seven-times Tour de France winner Armstrong was riding the time-trial bike that was stolen in Sacramento last weekend. The bike, worth about $10,000, was eventually turned into police on Wednesday by an unidentified resident.
Writing on his Twitter feed two hours after finishing, Armstrong said: "Done with the TT. That hurt!. Not a bad first test. Wanted to be top 15 so was able to do that. Story of the day tho was Levi. Amazing."