Between Trieste and Siena we found 0 direct bus departures, if connection travel options are available you can find them listed below.
Alternatively we recommend that you search for buses from larger cities near Trieste or from Trieste to larger cities near Siena.
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Traveling by bus from Trieste to Siena
The shortest travel distance between Trieste (IT) and Siena (IT) is 467 km, which equals a travel time by car of about 04:51 h.