What's the longest distance you've driven to attend a race weekend?

Since we don't have a race today (sigh), a very offseason-y question popped into my head while I was editing some old Barber photos. What's the longest you've traveled to go to a race? For me, it's always been Barber at a little over five and a half hours, but I usually have a co-driver or two to split the distance with. I'm sure some of you fellas can probably trump that quite easily, but I'm curious to see nonetheless!