Rail in the Iron Kingdoms
Rail in the Iron Kingdoms is complicated. It's possible that multiple gauges exist in a single country, given the application.
Khadoran Rail
Lines connect the following locales:
Most of the southern regions, running outward from Korsk, and extending outside the nation to Merywyn in Llael. Khador saw the rail lines as necessary for waging war and maintaining a foothold in Llael. Post Claiming, the rail lines ran regularly to and from Merywyn to Khadoran Laedry and Korsk. [1]
No rail lines run north of the Bitterrock River. [2]