The journey from Sagar Island to Gangtok involves a ferry ride to the mainland, followed by a train or taxi to Siliguri, and then a drive to Gangtok. The total distance is approximately 700 kilometers. You will first take a ferry from Kachuberia to Harwood Point, then travel to Kolkata, and finally take a train to New Jalpaiguri followed by a taxi to Gangtok.
Total Distance: 700 km by road, 550 km straight-line air distance.
Ferry timings depend on the tide; check before you leave.
March to June or October to mid-December.