The Southern 100 road races gets underway tonight, following a three year absence due to Coronavirus.
The Billown Circuit will close to traffic from 6.05pm this evening with practice due to take place in all classes.
Police say roads will open no later than 9:40pm, with the same closures taking place tomorrow and Wednesday.
On Thursday roads will close at 9:30am-12:45pm and again from 1:30-4:45pm.
The constabulary also says not to use Silverdale as a shortcut and to take care if using the back road diversion between Ballabeg via Grenaby to Ballasalla/Ballamodha.
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