The journey from Sangla to Dehradun covers approximately 350 km through the rugged terrain of Kinnaur and Shimla districts. You must first descend to Karcham and follow NH 5 towards Shimla before diverting towards Nahan and Paonta Sahib. The route is dominated by steep mountain roads and river valleys, requiring roughly 12 to 14 hours of travel time. Public transport is limited to HRTC buses, which are the most reliable way to navigate these narrow passes. Expect significant elevation changes as you drop from the high Himalayas into the Doon Valley.
Total Distance: 350 km driving distance; 180 km straight-line air distance.
Book your seat at the Sangla bus stand at least one day in advance.
Ensure your vehicle has high ground clearance for the rough patches near Karcham.
April to June and September to October to avoid monsoon landslides and winter snow blockages.