The journey from Mannar to Dehradun covers about 2900 km. You can take a train from Chengannur to Dehradun Junction, often requiring a change in Delhi. Alternatively, fly from Kochi to Jolly Grant Airport with a layover. Dehradun is the gateway to the Himalayas.
Total Distance: 2900 km by road, 2500 km by air.
Book tickets early.
Check for flight availability.
March to June and September to November.