Diveagar is located about 40 kms off the NH17 from Mangaon which is also the nearest railway station. Only if you are travelling from Mumbai would you be able to use train as the mode of transport however traveling by road to Diveagar would be more convenient. Diveagar can be approached from Mangaon or Goregaon on NH17 without considerable difference in the distance to be covered.
If you are driving from Pune to Diveagar the best route is the Mulshi route passing via Tamhini ghats. Try to avaoid the ghats after evening as there are no shops for a very long distance and is very deserted. The alternate route to Diveagar from Pune is via the Bhor in which case one could get off the NH 17 from Goregaon.
From Mumbai to Diveagar it is the NH17 that has to be taken uptil Mangaon. If you are traveling by a two wheeler you could take the 'sagari marg' and use ferries to cross the two creeks enroute.
Pune - Mulshi - Mangaon - Mhsala - Diveagar 165 kms
Alternate route would be the Bhor route via Goregaon.Pune - Bhor - Goregaon - Mhasala - Diveagar 170 kms
Mumbai - Panvel - Mangaon - Mhsala - Diveagar 180 kms
If you are traveling by a two wheeler you could take the 'sagari marg' and use ferries to cross the two creeks enroute.From Mumbai boats are available from Bhau cha dhakka near port trust of India. The boats will drop you off at Revas. From Revas its a its a straight forward route to Rajapuri near Murud about 75 kms from Revas. At Rajapuri you have to get the ext ferry to Dighi. You can also go to Agardanda nearby from where one can get a ferry to Dighi instead of a boat to Dighi.
A puneritraveller.com website