A spectacular day ride from Gangtok up to the Tibetan border — to the glacial Tsomgo Lake (3,753m) and the historic Nathu La pass (4,310m), once a key Silk Road branch and now a working India-China border crossing. The road climbs 2,700m through bamboo cloud forest and rhododendrons into alpine meadows. Permit required from Sikkim Tourism office in Gangtok the day before. Indians only beyond Tsomgo Lake.
Clone it to your planner, customize dates and stops, then ride. All free.