Beaune, France to Colmar, any stopover in Switzerland?

will your car have a Swiss toll Vignette on the windscreen, or are you willing to pay the CHF40 (just under 40€) to buy one for the short sidetrip? If you drive on a highway without one you are likely to get a very large fine.

That needs to be decided before we start thinking of which Swiss town would meet your needs.

But the direct route wouldn't include Switzerland - you would be adding that on.

Basel is close to Colmar and not much of a detour. We were there this past December and enjoyed it. You'll love Colmar!

Besançon, more or less on a direct route from Beaune to Colmar. See my latest entry on the traveling through the alphabet thread.

If you can manage to stay off of the limited access motorways in Switzerland, you will not need a vignette. A detour to Doubs Regional Natural Park would not be too far out of the way as it is on the border with France. Have not been there, and don't know anyone who has, but then that makes it a perfect "Back Door". Here is a page from the park website with restaurants that specialize in the regional cuisine, including the cheese.
https://www.parcdoubs.ch/fr/decouvertes/informations-pratiques/saveurs-gourmandes

Thanks everyone. I had no idea about the vignette. Not sure if it is worth it, just for a couple of hours.
Gunderson, interesting thread!
I will check out Basel and Doubs Park

https://community.ricksteves.com/travel-forum/france/between-dijon-and-colmar-any-good-brief-stops-along-the-way-for-a-sight-or-lunch

I'll also mention the steps of Gustave Courbet, including the (actual place, not the several paintings ... ) La Source de La Loue. It's not a major sight, but it's a cool leafy walk from the parking, and a neat place if you know his paintings.

Basel is only 45 minutes from Colmar on frequent trains, and over 60 gets a 25% discount on non-rush hour trains. So its a day trip, or even half-day trip. And a car would be a headache in that town.