South India, comprising the states of Kerala, Tamil Nadu, and Karnataka, is a paradise for motorcyclists, offering a rich blend of coastline, dense spice and tea plantations, twisty hill roads (Ghats), and ancient temple architecture. The best 14-day route for South India is the "Spice and Tea Route", which starts on the East Coast (Tamil Nadu/Puducherry) and ends on the West Coast (Kerala/Kochi), maximizing the contrast between the three regions. Here is a detailed 14-day itinerary, focusing on the winding Western Ghats roads, culture, and coastal relaxation.