Headed to Germany in mid october (10/14-21), staying in Heidelberg for 3 days. We have one day already planned in/around Heidelberg, and planning another day for a spa day in Baden-Baden en route to Munich, but one open day in the middle.
Given the time of year, which destination is a more feasible day trip, Rhine River or Black Forest? We have a German Rail pass, so not worried about transport, just want to pack the most into this extra day.
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