Forestry England says a blaze at Wykeham Forest is a timely reminder to visitors not to light fires.
Five engines and specialist equipment are fighting the blaze in Wykeham Forest near Dalby.
Visitors to Dalby Forest are reminded rules prohibiting campfires and barbeques "are not optional".
It follows the discovery of glass and other building materials strewn across a Manx country lane.
Rolling road closures will be in place on the Isle of Man for the mass participation cycling event.
Excited spectators travel from all over to watch the start of the race on the North York Moors.
The paths start at Sutton Bank and go into less visited areas of the North York Moors National Park.
Visitors and staff had to bed down in cafe and forestry cottages after fallen trees blocked exits.
Several roads will see their speed limits reduced to 20mph as the works are rolled out island-wide.
