The primary line of the network connects the capital of the kingdom, Riyadh, to the border with Jordan at Al-Haditha.

The line starts from Al-Jalamid mine which is located in the northeast in the Northern Territory, through Al-Jawf and Hail until arriving at the "AlBaithah railway junction" in the Qassim region.

Planned: Saudi Landbridge The operation on the 1,392 kilometres (865 mi) long freight part of the project connecting Al-Haditha and Jalamid with the new port city Ras Al-Khair was started in Jan 2015.

[4] The first six of 25 EMD SD70ACS freight locomotives ordered in April 2009 were handed over to SAR at Port Dammam on 22 August 2010.

[5] Passenger diesel push–pull trains made by Construcciones y Auxiliar de Ferrocarriles arrived in April 2015, and are designed to run at 200 km/h (125 mph) up to 55 degrees C.[6] Each of the SAR trains includes a restaurant car, family zone and a prayer compartment, as well as both seating and sleeping cars.