I stopped by here to get ice cream and they were very kind when I mentioned I had celiac. Additionally, I checked the allergen matrix online before I went. I personally had no issues, but you always need to double check when visiting a chain restaurant! They offer gluten free buns for burgers as well.
Gluten free bun in separate sealed package and a cheeseburger grilled. I was nervous at first, but very appreciative the bun came separately even though I had to assemble. Will definitely go back. Probably the best experience I have had with fast food restaurant that is not entirely GF.
Culver's has been a good experience when I have gone. They keep the gluten free bun separate in the package, so you know it hasn't been contaminated. Never had an issue with ordering a burger and plain custard here. Fries use same fryer, so avoid, staff has been knowledgeable about this whenever I come. Got the mashed potatoes once without gravy and did not have a issue.
This location does have a gluten free bun. However be careful. When we called they said fries should be fine. When we got here the assistant manager said no the fries aren't gluten free and the only gluten free options is the bun. I'm sad because apparently some Culver locations have a dedicated fryer. Seems like everyone could use a bit more training on this.