Hello sravan , I will be happy to solve your travel query 🙂👍.
* for your bike trip from banglore to Kerala I will prefer you some routes but just be sure to visit all the ofcheat places which you get to know in this journey and never forget to ask places to the locals when you are in the place ,they can help better then anyone else can do *.here my plan goes I would recommend you to stay one night near banglore , explore Nandi hills and nearby places travel to Cochin explore question well, stay one night at Cochin , move to Munnar ,you will need two days to explore fully and enjoy it. book a scenic and good hotel in Munnar travel to Thekkady, travel here and stay one night here and next day night at Alleppey .allepy is famous for many things .and finally your trip to Kerala will be covered . refer this link for getting some new offbeat places at Kerala https://www.tripoto.com/kerela/places-to-visit HAPPY TRAVELLING 😊
Bangalore to Mysore, Mysore to Wayanad, Wayanad to Ooty, Ooty to Palakkad, Palakkad to Munnar, Munnar to Kochi, Kochi to Alleppey, Alleppey to Kovalam(Trivandrum), Kovalam to Ponmudi. Try this route. You can explore all the places.
Bangalore - Mysore -wayanad- leave the hills to beach ( kannur ) -thalassery (fill your tummy with kerala's most delicious food items.. especially chicken biryani from old Paris hotel)-kozhikode( where food , history ,love ,all come together ) - thrissur- munnar - ( visit top station where you are above the clouds)- cheruthoni( where you'll find what floods did to cheruthoni )- leave idukki district by thodupuzha - Kottayam- alapuzha ( relax in backwaters)-kollam - travandrum- RETURN-kollam-gavi( pathanamthitta district)-kottayam- thrissur-Valparaiso via athirapally falls ( 6-6 Forest check post) - valparai - polachi (46 thrilling hairpin) - palakad- nilambur( malapuram district) - gudaloor via nadukani - Mysore - Bangalore. You can go to Ooty from gudlur if you wish to.