How many miles long is this major railway link between London and Edinburgh, in which The Swinton-Doncaster line is a short railway between Swinton Junction and Doncaster South Yorkshire?
Swinton–Doncaster line: The Swinton–Doncaster line is a short railway line in South Yorkshire between Swinton Junction on the Wakefield Line and Doncaster South Yorkshire Junction on the East Coast Main Line. East Coast Main Line: The East Coast Main Line (ECML) is a 393 mi major railway link between London and Edinburgh via Peterborough, Doncaster, Wakefield, Leeds, York, Darlington and Newcastle, electrified along the whole route.
393 mi