A ride round the southern end of Germany - Bavaria and such. Then on to Tirol and Austria, possibly with a short foray into Italy, where Garda and Stelvio are located. Avoid Switzerland at all cost! Been there once before, and learn that people are stiff, rude, unpleasant and arrogant and that pricing is bonkers. Also, they sell only whole-year carnets, meaning Switzerland carries a 30 Euro entry-fee, where eg Germany is free to roam.