I received an e-mail with information on gluten free pizza in Great Falls, thanks Sue! Boston's The Gourmet Pizza has gluten free crusts available. They only come in small but the report is that they are thin and taste like real pizza. Score one for Great Falls!
Boston's The Gourmet Pizza is located at 1101 7th St South and you can contact them at 406-761-2788. Their menu is available online if you want to check it out.