The route from Coonoor to the coastal town of Nagapattinam spans approximately 400 km. You will descend the Nilgiris to Mettupalayam, then traverse the central plains via Erode, Trichy, and Thanjavur before reaching the Bay of Bengal coast. This journey takes about 10 hours by road. It is a transition from high-altitude tea gardens to the humid coastal plains.
Total Distance: 400 km driving distance, 330 km straight-line air distance.
Take an overnight bus from Trichy to reach Nagapattinam by morning.
December to February, when the coastal weather is pleasant.