Mayor of London Boris Johnson and double Olympic gold medallist Laura Trott joined Surrey County Council officials at the launch of RideLondon-Surrey on Thursday.
Cyclists will pedal through Leatherhead, Box Hill, Dorking and Cobham on August 4, following routes starting in London's Queen Elizabeth Olympic Park and finishing on The Mall.
Prudential RideLondon is being billed as the largest mass-participation cycling festival ever held in the UK, with more than 70,000 cyclists, including some of the world's top professionals, taking part across four separate events.
Mr Johnson said: "Following the superhuman efforts of our Team GB cyclists last year, thousands of cycling enthusiasts, both experienced and amateur, riding a fantastic route through the streets of our fine city is surely a fitting legacy. I am delighted that six months on from Laura Trott's breathtaking gold in the Omnium we are in a position to announce routes and title sponsor.
"Prudential RideLondon is sure to become one of the world's top cycling events."
The four events making up the two-day festival include the 100-mile RideLondon–Surrey 100 on Sunday, August 4, – open to both amateur and club riders – and the RideLondon-Surrey Classic for elite men's professional riders, also to be held on the Sunday.
Places are still available for the amateur event through participating charities.
Thursday's announcement came exactly six months after Team GB track cyclist Laura Trott won her second London Olympic title. She said she was looking forward to taking on Surrey's notoriously hilly landscape.
"There are a lot of hills on that course and it is a long way," she said. "I'm coming down for a weekend and I can do it then."
The Surrey Classic route is 140 miles long and will include all the highlights of the Surrey 100 course along with the testing challenge of three ascents of Leith Hill, the highest point in Surrey, and even steeper than Box Hill.
Surrey County Council leader David Hodge said: "Both Box Hill and Big Ben will show off the very best of Britain when Surrey's picture-perfect countryside contrasts with London's famous cityscape."
On the Saturday of the festival, the RideLondon Grand Prix will take place, featuring the world's best women, junior and hand cyclists in action on a circuit in and around St James's Park.
The RideLondon Freecycle, to be held in London on the same day, is free to enter and open to cyclists of all ages and abilities.
You can sign up for the eight-mile, mass-participation ride online here
