Not sure what part of the state you’re in, but Quintin Brothers in Williston used to have a variety of specialty fuels.

Pump and Pantry in Williamstown sells 5-gallon cans of VP specialty fuels at the store. I believe they have 110 Octane.

An airport might have 110 Avgas

An airport is probably going to be your best bet.

A number of the smaller airports definitely do, the hard part is finding the right person to let you buy a 5 gallon can’s worth.

A reminder that Avgas is generally still leaded.

Maybe hit up Vermont Sports Car?

VEMS may have race fuel as well, or possibly octane booster.

You can buy torco or Boostane online. Not sure if it’ll quite get you to 110 octane though. I think it takes like two $25 cans to get to 110.

What specific fuel are you looking for? Leaded? Oxygenated? What displacement and rpm range?

110 doesn’t narrow it down much….

Common avgas is 100ll. It is a poor choice for most performance applications. It’s better than detonation or pump fuel but gives up a lot compared to an application specific performance fuel.

You can literally just walk onto the field with a gas can and fill up with a cc at most of them. They are often self service.

If someone is looking for 110 octane they generally are looking for race gas for a car or motorcycle regardless of the engine displacement.