Via Railway
lonavala is centre which connects mumbai and pune via railway so it has one of the most busy railway junction,beacuse every train travelling from mumbai to pune halts in lonavala so there is no need to worry,onecan pick any train which goes to pune.
there is a high frequency of express trains which arrives lonavala from mumbai , Pragati Express (12125), Deccan Queen (12123), Indrayani Exp (22105), Bhusawal Pune Exp (11025), Chennai Mail (11027) are some of direct trains which runs from chhatrapati shivaji terminals
it takes 128km and average 2hrs 30min of run for train to reach lonavala from chhatrapati shivaji maharaj terminals.
its pretty fun to travel in express because the scenery of valleys while crossing ghat is amazing,
…..click here for Timetable of trains from mumbai to lonavala
Via Road
mumbai-pune expressway(84km-2hrs20min)
if you are travelling with car this is the fastest route to choose it starts from kalamboli near panvel and is fastest way to lonavala