This paper examines third-country passengers' travel itineraries on the DFDS Seaways ferry route linking Kiel, Germany with Klaipeda, Lithuania using a mixed-methods approach comprising qualitative and quantitative methods, including geographical information system spatial-cluster analysis. Survey results reveal the predominant third-country passenger groups (i.e. passengers from countries other than Germany and Lithuania) on ferries sailing from Kiel to Klaipeda and back were Latvian (28%), Dutch (20%), British (14%) and Danish (12%) nationals; 86% of Latvian passengers used the ferry to travel between home in Latvia and work in Western Europe. Western European passengers comprised a diverse segment of motorized tourists using the ferry in summer to reach the Baltic States faster than by land. The paper highlights the role of the Kiel-Klaipeda ferry route within the Baltic Sea motorized tourism circuit linking the Baltic and Nordic countries with Western Europe.