Hareskovbanen is one of six radial S-train lines in Copenhagen. It connects the city center to a number of northwestern suburbs and the cities of Værløse and Farum, with the terminus placed in the latter.

B is a service on the S-train network in Copenhagen. It runs between Farum and Høje Taastrup and provides stopping services on the S-train system's Farum radia and Tåstrup radial.