The Main Line of the North Western Railway runs from Tidmouth to the end of the Vicarstown Bridge.
The Main Line as a whole has experienced quite a few incidents, such as Henry refusing to leave Ballahoo Tunnel, Gordon bursting his safety valve, and James needing a pair of bootlaces to repair the brake pipe in his coaches.
There have also been many other derailments and incidents far beyond comprehension.
- Lower Tidmouth
- Kellsthorpe Road
- Crovan's Gate
- Henry's Tunnel
The Main Line stretches across the Island of Sodor with a good view of the coast in certain areas. There are plenty of junctions and stations scattered throughout.