A backbone rail for a roller coaster, comprising two rail pipes designed for vehicles to travel upon, and at least one, particularly main load-bearing backbone pipe not designed for vehicles to travel on, whose second moment of area is greater than the second moment of area of the rail pipes, wherein rail pipes and backbone pipe are connected to each other section-by-section by stiffening bulkheads, whereby at least one bulkhead has the following features: A transverse cross member, which extends in the orthogonal direction and connects the rail pipes with each other, and bulkhead plates, connecting at least one rail pipe with the backbone pipe, wherein at least one bulkhead plate is designed as a longitudinal bulkhead plate, whose main plane of extension extends perpendicular to the bulkhead plane, and which is attached to the backbone pipe in such a way that it runs tangentially into the backbone pipe. In addition, the invention relates to a roller coaster arrangement with such a backbone rail.