MLN Main Line (Paddington to Penzance via Bath) see separate portions
MLN1 Paddington to North Road Junction 0.00 - 246.08 Paddington via Box
MLN2 Cornwall Loop Junction to St Germans 247.28 - 256.38 Paddington via Box and Plymouth Millbay (reverse)
MLN3 St Germans to mileage change point east of Chacewater 256.40 - 305.65 Paddington via Box and Plymouth Millbay (reverse)
MLN4 Mileage change point east of Chacewater to Penzance 305.67 - 326.50 Paddington via Box and Plymouth Millbay (reverse)
MLN5 Plymouth North Road to Millbay station 246.08 - 246.64 Paddington 246.64 (Millbay station) - 247.22 doubled
MLN6 Bristol Temple Meads Old Station 118.16 - 118.39 Paddington
MLN7 Plymouth North Road west side of triangle 247.22 - 247.42 Paddington via Box and Plymouth Millbay (reverse)