If you are travelling from Mumbai you have the option of using Train as the transport mode however travelling by road would be more convenient.
Mumbai - Khopoli - Jambhulpada - Pali - Wakan Phata (N.H.17) - Kolad - Indapur - Mangaon - Veer - Ambet - Shenale - Mandangad - Dapoli - Ladghar
Dapoli is approximately 200 - 230 Kms from Pune depending on the route taken. The shortest route is via Bhor (Verandha Ghat) but there are a few other alternate routes that you can take to reach Dapoli from Pune.
Pune - Khed Shivapur – Bhor – Varandha Ghat – Latwan – Dapoli => Ladghar
Pune => Pune – Bangalore Highway Nh4 => Wai => Mahabaleshwar => Poladpur => Khed => Take Right from Khed for Dapoli => Ladghar