If you are visiting Ooty then this is a train journey of a lifetime. The toy train route of nearly 46 km from Mettupalayam to Ooty will take you through the valleys and pass through numerous bridges and mountains. The best part about the train journey is that the route from Mettupalayam to Coonoor is covered by the train using steam locomotive which is itself is an amazing experience.
Apart from that the valley view, the curves on the route and the lush green forests that the train passes through make it one amazing journey. The journey takes around 5 hrs and if you get a first-class ticket (online reservation is the best option) then the journey truly becomes wonderful.
However, if you are not keen on sitting for 5 hrs then you can also cut short the journey by traveling between Coonoor and Ooty which would be a journey of around 75 mins. Also, this route has more services than from Mettupalayam. But the journey on the whole 46 km is recommended since the route becomes more scenic after Coonoor.