A canal towpath in Burgundy and a knife-edge ridge above Glen Coe both take a day to walk, and nothing else about them is the same. That gap is the useful part of multi-day walking routes in Europe: the choice is not a ranking, but a gradient of how hard a day you want and where you want to be standing when it ends.
The sites below sit along that gradient. At the near end, flat water-level walking with a village bed waiting at the finish, and waymarked national trails you can follow without a map in hand. In the middle, hut-to-hut circuits in the Dolomites, where the roof over your head is booked months ahead. At the far end, a Corsican traverse measured in vertical metres and one Scottish ridge that is hard for reasons unrelated to distance: a single day out, and the sternest thing here.
Read the sleeping arrangement as closely as the mileage; it tells you more about the day than the distance does. One thing worth carrying: much of Europe's route writing comes from people who also sell trips, guidebooks or gear, and the sections say so where it applies.
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