Zwitserland

Few countries concentrate high-mountain cycling the way Switzerland does. With 300 catalogued climbs and a summit reaching 2494 m, the terrain rewards riders who come for gradient and altitude alike. A remarkable 97 of these are hors catégorie — the hardest classification there is — meaning nearly a third of the country's climbs demand the sustained effort usually reserved for the sport's most feared ascents. These are not rolling detours but genuine alpine tests, stacked one after another across a compact, ride-everywhere landscape.

The marquee passes read like a bucket list. Grimselpass, Furkapass, and Sustenpass anchor a legendary loop of hairpins and glacial views, while Nufenenpass / Passo della Novena and Passo del San Gottardo carry you between north and south. Add Klausenpass, and you have a set of climbs that define what makes Switzerland a destination for serious cyclists.