This article scrutinises the role railways played in the existence of the German concentration camp system during the Third Reich era. Through the lens of Jewish slave labourers’ experiences, I argue that the numerous daily transports of prisoners from site to site were the backbone of the SS camp system. Grounded in survivor testimonies and Nazi administrative records, this paper traces the pathways of Dutch Jewish deportees on a single deportation transport to the concentration camps and addresses the impact of the frequent displacements upon the inmates. In general, the Germans decided which detainee was sent where, yet sometimes the victims could interfere in the selection process or evade relocation to another site. The maps in this article visualise the trajectories of several Dutch Jews; they demonstrate that prisoner relocation was a common phenomenon and reveal the vast distance that inmates covered by train.