This question has come up in a couple of places recently so I thought I'd offer the information that I have.
getting injured while riding sucks, but for Canadians racing/riding south of the border, it can also be VERY expensive.
your best to contact the broker mentioned as he is the expert, I am not.
Regular travel insurance WILL NOT cover you.
No general travel insurance will cover you for any type of "CONTEST OF SPEED"
Even though trackdays are not racing, they are seen as contests of speed by insurance companies, and they will deny your claim
If you're concerned, you can purchase a policy from lakeridge financial that will EXPLICITLY cover you for "CONTESTS OF SPEED and RACING"
The policy covers up to $5mil and can either be purchased on a per weekend basis, or a yearly policy that will cover you for trips of up to 10 days in duration, ie, you can be away riding/racing for ten days, return to canada for and go back for another 10 days.
Mine costs under $100 per year
for those interested, you can contact Ralf Scholtes at lakeridge financial
lakeridgefinancial at sympatico.ca
905 655 8233
Other insurance carriers MAY offer similar policies, but I know this one works as I've had to use it on more than one occasion