Thousands of people are already lining the start of Stage 6 of the Tour of Britain.
The race from Sidmouth to Haytor begins at 11 am.
The sixth stage of the Tour of Britain cycle race gets underway in Devon today. It starts in Sidmouth this morning and will end at Haytor this afternoon with the first summit finish in the history of the event. Sir Bradley Wiggins is leading the race so far.
Olympic gold medalist and Tour De France winner Sir Bradley Wiggins is on his way to Devon along with some of the best cyclists in the world as they prepare for the latest stage of the Tour of Britain race.
They'll cycle from Sidmouth to Haytor on Dartmoor, with thousands of spectators lining the route. It's also said it'll bring millions of pounds to the Devon economy.
Our correspondent Seth Conway reports from Sidmouth
Several roads will be closed in Sidmouth this evening as the Tour of Britain cycle race arrives in Devon. Road closures are in close from 5pm until 8pm in the town. These include: The Esplanade, Station Road, Chapel Road, Chapel Street, Dove Lane, New Street, Fore Street and Church Street.
Sir Bradley Wiggins is to lead Team Sky at this year's Tour of Britain event.
The Olympic champion and winner of last year's Tour De France will be winding through Devon in just 15 days.
Stage six of the race starts in Sidmouth and ends with a gruelling climb up Haytor on Dartmoor. It's estimated it'll bring more than £7 million into the county - as well as showing off Devon to a global television audience.
Devon's economy got a big sporting boost today with the news that cycling's Tour of Britain will once again be winding its way through the county in September. It is estimated it will bring more than £7 million into the county - as well as showing off Devon to a global television audience.
Last year's Tour De France and Olympic champion Sir Bradley Wiggins will be there, along with Mark Cavendish. Here is Matthias Kurth's full report.
Cllr Stuart Hughes, Devon County Council.
Professional cyclists will be in Sidmouth tomorrow as Devon County Council prepare for the arrival of the Tour of Britain.
Team UK Youth riders will be promoting the Devon Stage of the race. Sidmouth is the start venue of the stage which will cover 85 miles of Devon before the summit finish at Haytor in Dartmoor National Park. The Tour is in its tenth year.