The journey from Sriperumbudur to Dehradun covers over 2400 km. You can reach Chennai Central and board long-distance trains like the Dehradun Express. Alternatively, fly from Chennai to Dehradun (DED) with a layover in Delhi. The route takes you across the length of the country.
Total Distance: Driving distance 2500 km, straight-line air distance 2000 km.
Train travel is very long; consider flights for this route.
Connecting flights are the most practical option.
October to March for pleasant weather.