Gluten-Free, Vegan, and Vegetarian are on the menu, but the same kitchen also prepares what you avoid, so cross-contamination is possible. Tell staff what you react to, and ask how your dish is prepared before you order.
Rainbow Restaurant is a family owned breakfast and lunch spot in Fort Collins that says it has been voted the city's best breakfast for over 40 years. It says it offers vegetarian, vegan and gluten-free options and makes every dish from scratch. It does not describe a dedicated gluten-free kitchen, so ask the staff about your needs.