Gangtok is 2500 km from Sathyamangalam. The most practical route is to fly from Coimbatore to Bagdogra, then take a 4-hour taxi to Gangtok. It is a long journey involving multiple modes of transport. Expect a total travel time of 12 to 15 hours. This route takes you from the tropical south to the Himalayan north.
Total Distance: 2500 km by road, 2100 km air distance.
Book your flight to Bagdogra well in advance.
March to May or October to December for clear mountain views.