Police say that the woman who fell through a roof in Skipton as she watched the Tour did not suffer life threatening injuries.
They say the woman, thought to be in her forties, climbed on to the roof through a first floor window before falling through.
In a separate incident a teenage boy was struck by part of the caravane as it passed through Ilkley.
Police in Skipton have sealed off a building where a woman fell as she watched the Tour de France passing.
She was airlifted to Leeds General Infirmary after falling through the roof in Chapel Hill. It is thought she suffered a head injury.
North Yorkshire Police said officers were called at around 12.30pm to reports that a woman had fallen through a roof at the Corn Mill on Chapel Street in Skipton.
– North Yorkshire Police statement
The woman, believed to be in her forties, was treated at the scene by ambulance staff and taken to hospital by air ambulance. She is believed to have sustained head injuries in the fall.
It's is believed the woman had climbed on the roof via a first floor window.
The route of the Tour de France was not affected by the incident.
A woman has been airlifted to hospital with serious head injuries after falling through a roof while watching the Tour de France in Skipton, BBC News reports.