The Pre-TT Classic Road Races kick-off the festival fortnight this evening down at the Billown Circuit.
Roads will be closed from 6.05pm until 9.30pm at the latest for the first practice session.
Meanwhile, there's been an urgent appeal for marshals for all of this weekend's races.
Anyone able to help should sign on at the Southern 100 Racing Club headquarters on Castletown Bypass.
(Picture: Action from the Billown circuit).