Two extra races have been added to the Southern 100 schedule this year because so many racers want to compete.
This year has seen more entries into the event than ever before.
The first practice sessions start on Monday, July at 6pm and the event runs until Thursday.
Phil Edge from the Southern 100 Club says it's a sign of the event's growing popularity:
Investigators say fatal Manx ship sinking 'avoidable'
Family's appeal to bring brain-injured dad home
Island animal charity appeals for help after relentless bad weather
Further appeal for witnesses following incident in Ramsey
Speed restrictions planned for the coast road next week
Hundreds paid by cheque after MiCard scheme scrapped
No drone zone on Tynwald Day
Last orders at the bar as ‘Spoons puts counter up for sale