:: From Rome:
take the highway until Civitavecchia, then take the State Route Aurelia (90 km);
:: From Grosseto:
take the State Route Aurelia southern direction (90 km);
:: From Viterbo:
there are two possibilities: driving across Vetralla and Monte Romano or by passing through Tuscania (in both cases 45 Km);
Tarquinia is situated on the railway section Roma – Grosseto – Pisa
The train station is about 3 km from the city centre and it’s possible to take the bus to get there.