I'm not sure all who runs avgas (100LL) in their bikes, but the only easy place in town to get it will be no more as of April. Felts Field Aviation is hanging it up. So, you might want to fill up a couple cans now, since the only other place I know of is XN Aviation out at International, and while the owner is cool with selling you gas, the kiddies pumping get a little weird about it.
I am *not* looking forward to paying even more for race gas and mixing it down.