By ferry-boat :
There are frequent connections between Skala Oropou and Eretria.
To get to Skala Oropou, take the bus at the "Plateia Aegyptou" in Athens or by car take the highway "Athina - Lamia" and then drive to the exit Oropos / Eretria.
By road :
There are many bus lines from Athens to Chalkida departing from the Central Bus Station in central Athens. Change in Chalkida Bus Station to South Evia.
By car, take the highway "Athina - Lamia" and then drive to the exit for Chalkida. Once in Chalkida take direction for South Evia.