The Saudi Railways Organization (SRO) was a state-owned railway company that operated part of Saudi Arabia's rail network, along with the Saudi Railway Company. The SRO operated a network of railways with a total length of approximately 1,380 kilometers. The network consisted of two main lines. A 449 km passenger line that links Dammam with Riyadh, and a 556 km freight line that connects the King Abdul Aziz Port in Dammam with Riyadh.
Passenger train on the Dammam-Riyadh Line.