400 cyclists are taking to the TT course today as a mass participation event as part of the British National Road Championships event.
The Cannacord Sportive gets underway at 10.15am this morning, and sees cyclists lapping the TT course.
The Mountain Road will be closed between Barrule Park in Ramsey and the Creg ny Baa from 10.45am until 4pm at the latest.
Organisers are asking motorists to take extra care this morning around the circuit with so many people taking part.
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