My suggestion will be to reach Pune, Maharashtra from any part of India and then take a MSRTC Bus or a Tourist Cab to reach Bhimashankar Jyotirling.
The Distance is approximately 110 KMS and takes 3 hours to reach Bhimashankar Temple from Pune.
Bhimashankar Temple is at a walkable distance from Bhimashankar Bus Stand & Car Parking.
You must climb down a fair number of steps (approximately 300 steps down), don’t worry there are lots of places to sit and rest on the way.