The journey from Chadayamangalam to Dehradun is a massive 2900 km trek across India. You must reach Kollam Junction for rail connectivity. This route takes you from the southern tip of India to the foothills of the Himalayas. Given the distance, flying is highly recommended for time efficiency. Dehradun is the gateway to many hill stations in Uttarakhand.
Total Distance: 2900 km by road, 2500 km air distance.
This is a very long journey; plan for multiple train changes.
March to June and September to November.