Hi Sanjay Kumar, I'm from a town Kolar which is near Bangalore. I would suggest to travel to Nandi hills first. Nearby you can visit another two hill stations Skandagiri which is famous for night treks and beautiful foggy sunrises. There are many groups which conducts night treks to Skandagiri every week. Nearby you also visit Avalbetta which is famous for a edge rock and there's also a temple. Next day you visit Narayangiri which is about 80kms away from Bangalore. It's a monolithic rock, there's a temple of Lord Lakshmi Narayana.
Next you ride to Bilkal betta which is an offroad.
It's an amazing place to visit.
You can visit Akkayama hill, Avathi hill, Thimmappana betta which are near Bangalore only. Don't forget to visit Hesrghatta which is near Yelahanka. it's also awesome bro. Enjoy!!!
Hey Sanjay, You can plan a road trip to Chikmagalur and Coorg. It is one the best destinations for 4-5 days near Bangalore. Other options are: Mysore-Bandipur-Ooty, Coorg-Udupi-Mangalore and Ooty-Wayanad. Plan your trip with the help of following travel itineraries.