Installation method for railway tracks on ballast, without auxiliary track, in particular it is a method that allows the installation of the railway track to be carried out in a quick and efficient manner, with a reduced number of additional devices and without the need to build any auxiliary track for possible supplies, in which the making of the ballast bed and the arrangement of the sleepers is carried out in a conventional way, the stretches of track being transported and supplied from mini train wagons, characterised by the following method stages: to provide a number of rail movement elements on the already installed sleepers, each one of them supported on two successive sleepers forming a bridge between both sleepers, consecutively separated from each other at a predetermined distance, each one of these rail movement elements being made from a metallic profile, made from steel, fitted with a support and guidance roller for the longitudinal movement of the rail up to its corresponding placement; to couple a discharge wagon to the last wagon of the mini train, fitted with some means for the guided unloading of the rails in pairs; fixing of the pair of rails at the unloading end, and fastening them with the traction devices so as to unload them; unloading of the rails of the track from the discharge wagon, towards their support onto said rollers of the movement elements, using the traction made with the tractor device that is fitted to move so that it spans the entire width of the track; cutting, squaring and fixing of the rails for the connection of the adjacent ends of each rail with the respective previous stretch; lifting of each rail with the help of some lifting devices fitted to the tractor device, the removal of the movement or roller devices, and the loading of the latter onto racks provided for that purpose on both sides of the stated tractor device; partial fastening of the track in respect of a chosen sleeper every so many units, and placement of the rollers or movement elements for the next cycle, and return of the tractor device and the mini train, and finalisation of the track fastening operation. to provide a number of rail movement elements on the already installed sleepers, each one of them supported on two successive sleepers forming a bridge between both sleepers, consecutively separated from each other at a predetermined distance, each one of these rail movement elements being made from a metallic profile, made from steel, fitted with a support and guidance roller for the longitudinal movement of the rail up to its corresponding placement; to couple a discharge wagon to the last wagon of the mini train, fitted with some means for the guided unloading of the rails in pairs; fixing of the pair of rails at the unloading end, and fastening them with the traction devices so as to unload them; unloading of the rails of the track from the discharge wagon, towards their support onto said rollers of the movement elements, using the traction made with the tractor device that is fitted to move so that it spans the entire width of the track; cutting, squaring and fixing of the rails for the connection of the adjacent ends of each rail with the respective previous stretch; lifting of each rail with the help of some lifting devices fitted to the tractor device, the removal of the movement or roller devices, and the loading of the latter onto racks provided for that purpose on both sides of the stated tractor device; partial fastening of the track in respect of a chosen sleeper every so many units, and placement of the rollers or movement elements for the next cycle, and return of the tractor device and the mini train, and finalisation of the track fastening operation.