In the Basel area one can buy a TriRegion Mini pass for €9.10 which covers some of Basel as well as the RVL zones 1, 2, 3, and 8 in Germany. I'm looking for a transit pass I can buy that would be good for at least a couple of weeks and would cover a similar or larger area, e.g. as far as Pratteln, Rheinfelden, and perhaps also Kaiseraugst.
A group pass might be worth considering, as I'd be taking two kids along, one of whom is elementary school age, and the other of whom is 15 (and thus considered an adult, at least by Deutsche Bahn).
Is there a longer-term pass for Basel that can cover these conditions?
