Traveling from Siliguri to Shimla involves crossing the vast northern Indian plains before ascending into the Shivalik range. The most practical route is taking a train from NJP to Kalka, followed by the historic Kalka-Shimla toy train. The total distance is roughly 1650 km. This journey takes you through the heart of the Gangetic plains. It is a scenic transition from the humid plains to the cool mountain air.
Total Distance: 1650 km by road, 1350 km straight-line air distance.
The Kalka-Shimla toy train is a UNESCO World Heritage site; book it early.
April to June or September to November for clear mountain views.