Trenitalia operates a train from Chiusi to Siena every 2 hours. Tickets cost $7 - $16 and the journey takes 1 h 20 min. Alternatively, Tiemme Spa operates a bus from Chiusi to Siena every 30 minutes. Tickets cost $1 - $2 and the journey takes 7 min. Trenitalia also services this route twice daily.
How to get from Chiusi to Siena
From Chiusi C.T. train to Siena. 1 h 20 min 11€. From Chiusi Citta'-V.Carbone Ang V. C.Aurelia bus to Chiusi-Chianciano Terme then bus to Siena. 2 h 27 min. From Chiusi drive to Siena. 57 min 12€.