Gangtok, the capital of Sikkim, is approximately 700 kilometers from Kolaghat. The journey involves a train to New Jalpaiguri (NJP) and a 4-hour taxi ride through the scenic Teesta River valley. You will need an Inner Line Permit (ILP) for foreign nationals, though Indian citizens do not need one for Gangtok. Total travel time is about 18 hours.
Total Distance: 700 km driving distance and 580 km straight-line air distance.
Shared taxis are available from NJP and Siliguri to Gangtok.
March to June and October to December for clear mountain views.