The Rishikesh–Karnaprayag Railway, runs from Yog Nagari Rishikesh railway station in Rishikesh to Karnaprayag. It is Indian Railways' proposed route for the Char Dham Railway to connect to the Chota Char Dham. It is geostrategic initiative of India to counter China's expansion.
The 125 km long Rishikesh–Karnaprayag route starts at Yog Nagari Rishikesh at 385m AMSL and ends at Karnaprayag 825m AMSL. The ₹16,200 crore project will reduce Rishikesh to Karnaprayag travel time from 7 hours to 2.1 hours. It will have 16 bridges and 105 km or 85% of the project inside tunnels. A 15.1 km tunnel, reported to be the country's longest, will be built between Devprayag and Lachmoli on the route