The average bus between Roma Termini and Siena takes 3h 22m and the fastest bus takes 3h 9m. The bus service runs several times per day from Roma Termini to Siena. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run every 4 hours between Roma Termini and Siena. The earliest departure is at 5:35 AM in the morning, and the last departure from Roma Termini is at 9:15 PM which arrives into Siena at 12:40 AM. All services require a transfer, and take on average 3h 22m. The schedules shown below are for the next available departures.

3h 28m • 1 change

3h 14m • 1 change

3h 13m • 1 change

3h 26m • 1 change

3h 18m • 1 change

3h 19m • 1 change

3h 41m • 1 change

3h 39m • 1 change

3h 18m • 1 change

3h 19m • 1 change

3h 41m • 1 change

3h 39m • 1 change

3h 19m • 1 change

3h 28m • 1 change

3h 22m • 1 change

3h 20m • 1 change

3h 19m • 1 change

3h 19m • 1 change

3h 19m • 1 change

3h 20m • 1 change
Want to know about travelling from Roma Termini to Siena? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Roma Termini to Siena. However, there are services departing from Roma Termini station and arriving at Siena station via Siena. The journey, including transfers, takes approximately 3h 22m.
Roma Termini to Siena bus services, operated by ATAC S.p.A. Azienda per la mobilità, depart from Roma, Autostazione Tiburtina station.
Roma Termini to Siena bus services, operated by ATAC S.p.A. Azienda per la mobilità, arrive at Siena station.
Book your Roma Termini to Siena bus tickets online with ATAC S.p.A. Azienda per la mobilità and FlixBus.
The distance between Roma Termini and Siena is 184.4 km. The road distance is 237 km.
FlixBus operates a bus from Roma, Autostazione Tiburtina to Siena every 3 hours. Tickets cost €16–28 and the journey takes 2h 39m. AutoLinee Moretti also services this route 3 times a week.