The trip is rather expensive. It's better to go by train to Korinthus and rent a car there. Then there's also time to see the excavations of Epidaurus and the the town of Nafplion.
Note from Viator
Thanks for your feedback and alerting other travelers to this issue. As you note, there is relatively long walk but there is plenty of time to do it, so you may take your time to enjoy the view as you go.
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