I'd plan ahead to insure there was a 12- or 24- hour MTB race I could do on the day. And knowing I could do it without having to police my intake/insulin/BGs so g**d***m tightly would just be AWESOME!
That's exactly what I'd do -- I'd ride like the wind for as many hours as I could, pushing myself as hard as I could go with no worries of bonking due to massive sugar blowouts at 3AM in the morning when I was miles out in the woods or the desert (happened...). Those, quite frankly, are a pain in the a$$. *_*
Yeah, that would be hella fun.