The main ferry company serving Arbatax is Tirrenia. Ferries sail to/from Genoa (from €72, 15½ hours) and Civitavecchia (from €43, nine to 10½ hours). There are also connections with Cagliari and Olbia.
ARST buses connect Tortolì with Santa Maria Navarrese (€1.30, 15 minutes, 11 daily Monday to Saturday, two Sunday), Dorgali (€4.90, one hour 50 minutes, daily Monday to Saturday) and Nuoro (€5.50, 1½ hours, four daily Monday to Saturday), as well as many inland villages. Local buses 1 and 2 run from Arbatax to Tortolì and, in the case of the latter service, to the beach and hotels at nearby Porto Frailis.
Near the port, you’ll find the terminus for the trenino verde, a scenic train that runs from Arbatax to Gairo (€14, 2½ hours) daily, except Tuesday, from mid-June to mid-September.