Trip tool

The altitude ladder

From the tea plains near sea level to lakes above 5,000 m. Mountain sickness can start above about 2,500 m, so plan to climb in steps.

Sleep no more than about 500 m higher each night once you are above 3,000 m, and spend a night at a middle height (Gangtok, Lachung or Lachen) before a day trip to Nathu La, Zero Point or Gurudongmar. Drink water, skip alcohol on the first high nights and come down if a headache gets worse. This is general advice, not medical advice: ask a doctor before you travel if you have heart or lung conditions.

Gurudongmar LakeNorth Sikkim 5430 m Nathu LaEast Sikkim 4310 m Tsomgo LakeEast Sikkim 3753 m SandakphuDarjeeling 3636 m Yumthang ValleyNorth Sikkim 3564 m ZulukEast Sikkim 3000 m PhobjikhaBhutan 2900 m LachenNorth Sikkim 2750 m LachungNorth Sikkim 2700 m Haa ValleyBhutan 2700 m Tiger HillDarjeeling 2590 m RishopKalimpong 2590 m ThimphuBhutan 2320 m ParoBhutan 2200 m LavaKalimpong 2195 m PellingWest and South Sikkim 2150 m RavanglaWest and South Sikkim 2100 m DarjeelingDarjeeling 2045 m Sillery GaonKalimpong 1830 m YuksomWest and South Sikkim 1780 m RinchenpongWest and South Sikkim 1700 m LolegaonKalimpong 1675 m GangtokEast Sikkim 1650 m RumtekEast Sikkim 1550 m MirikDarjeeling 1495 m KurseongDarjeeling 1482 m AritarEast Sikkim 1400 m NamchiWest and South Sikkim 1315 m DzonguNorth Sikkim 1300 m KalimpongKalimpong 1250 m PunakhaBhutan 1250 m Samsing and SuntalekholaDooars 900 m BuxaDooars 867 m PhuentsholingBhutan 300 m SiliguriDarjeeling 122 m Gorumara and LataguriDooars 100 m ChilapataDooars 70 m JaldaparaDooars 61 m

Heights are approximate, for the town centre, lake or viewpoint named. Check current status before you travel.

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