The Department of Infrastructure says the Mountain Road will close next month, marking the end of the roadracing season.
The route is due to shut on September 2 and 3 as equipment needed for racing is removed between Ramsey and the Bungalow.
There'll then be a second closure between the Bungalow and CregNyBaa on September 9 and 10.
The road will close from 9.30am to 8pm on both days.
Yellow weather warning for ice
Emergency services dealing with ‘unknown substance’ on beach
Archallagan hosts orienteering race
Your guide to Boxing Day traditions
Have you taken the binman's tip this Xmas?
Ramsey Domino's delayed until next year
No timeline for rights of way at nature trails
Manx driving licence scam on Facebook