The Main Line

Operations and stations
The mainline starts from the English town of Barrow-in-Furness. Crossing over the rolling lift bridge across the Walney Channel, the line calls at Vicarstown before passing through Henry's Tunnel. After this, the junction to the Norramby branchline is reached.

After Vicarstown, the line calls at Crovan's Gate, home to the Works and the Skarloey Railway. After stopping here, the line travels to Kellsthorpe Road, junction to the Kirk Ronan branchline. The line afterwards reaches Killdane, junction to the Peel Godred branchline.

Cronk is next, and once leaving the station, trains cross a viaduct, and then arrive at Maron. Trains then descend Gordon's Hill, and then pull in at Wellsworth, junction to Edward's branchline. Trains then arrive at Crosby, pass through a mile-long tunnel, and then stop at Knapford, junction to Thomas' branchline. The main line terminates at Tidmouth, home to the headquarters of the North Western Railway and the main line sheds. The junction to Duck's branchline is here as well.

The main line carries several kinds of freight, including ballast, lead, zinc, silver, slate, bauxite, produce, building stones and fish, including the Tidmouth kipper, which is considered a delicacy. Tourism is a major part of the passenger traffic during the summer season, as Sodor has many beautiful lakes, mountains, and other beautiful scenery. The main passenger traffic is commutering, with either stopping trains that stop at all main line stations or the "Wild Nor' Wester", the railway's express, which stops at a select few of the stations.

Engines
The line is staffed by Gordon, who usually pulls the "Wild Nor' Wester", Henry and James, two mixed-traffic engines, and Bear, who assists with passenger duties. Donald, Douglas and the Works Diesel help out with shunting duties and goods trains. Pip and Emma take passengers from London to Sodor.