Note 1:
Climbing Routes: Kodaikanal can be climbed by two different routes from the plains - one from Palani and the other from Batlagundu/Genguvarpatti. The Batlagundu route is wider, less gradient and easier to drive, it is called the "Ghat Road". The Palani route is useful only if you are driving from Coimbatore/Udumalpet/Pollachi/Palghat direction, it is narrower, steeper and tough to climb. Both these routes meet at Perumalmalai Junction from where Kodaikanal is 12 km.

Note 2:
Munnar Route: Kodaikanal to Munnar direct road has been closed due to some inter-state issues. Only dare-devil two-wheelers can use that route (via Berijam). If you have to travel west of Kodaikanal (Munnar/Thekkady/Cochin/Kollam/Trivandrum), it is best to take the Ghat Road towards Batlagundu, turn right at Ghats Road Junction towards Periyakulam and procced via Theni/Bodi.

Note 3:
Some map sites show a short, straight route from Periyakulam to Kodaikanal. This road was the only track to Kodaikanal during pre-independence days. It is surprising to see the map sites still showing that trail as a "road" now. It is a steep 18km hiking trail only for the seasoned mountain climbers. It is not a "Road", it's a trekking route via Kumbakarai/Vellagavi Village. Please do not confuse Periyakulam to Kodaikanal route as a Road.