Some have even had cover specifically for the event
All TT visitors who've needed healthcare on the Island so far have had the right travel insurance, according to Manx Care.
Those without the right protection run the risk of having to pay for medical procedures or repatriation themselves, which could cost tens of thousands of pounds.
Manx Care's been encouraging people to check what their insurance covers before travelling here.
Commercial Development Manager Andy Reed says they've even seen a new type of cover this year:
Manx Radio to 'formally investigate' complaint from veteran broadcaster
Temporary ambulance station established at Castletown Coastguard Station
Owners advised to keep pets out of river
Nearly £165k spent on AI subscriptions