Last update 13 July 2018
Additional information is always gratefully received, whether entirely new records (particularly historical records), or information to fill in gaps or correct errors, via the contact link under the Miscellaneous entry in the navigation bar above. Thank you.
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Mileages are given in the form miles.chains. Figures prefixed with ≈ are approximate, items in parentheses are not on this route but are given for reference.
0.00 junction with Bute West Dock West Side lines (mileage unknown) 0.02 CARDIFF BAY [mileage at buffer when dock lines closed] 0.07 CARDIFF BUTE ROAD [mileage at centre when line ran through to docks] 0.67 Queen Street South Junction with CEJ (0.22/0.44) 0.69 Cardiff East Branch Junction with CEB (0.00) 1.08 CARDIFF QUEEN STREET 1.17 Queen Street North Junction with CQS (1.22) 1.28 Crockherbtown Junction with CHT (1.34) 1.61 CATHAYS 1.67 CATHAYS WOODVILLE ROAD 1.70 Cathays depot 1.79 Cardiff Cathays locomotive depot 2.11 Cardiff Cathays carriage and wagon works 2.35 MAINDY NORTH ROAD 3.58 Roath Branch Junction with ROA (0.00) 4.27 LLANDAF 4.41 Llandaf Loop Junction with LDA 5.05 Radyr pre-assembly depot 5.08 Radyr locomotive depot 5.23 Radyr Junction with RAD (4.41) 5.32 RADYR 6.31 PENTYRCH 7.17 Walnut Tree Junction with WNT (12.03) 7.24 TAFFS WELL  7.30 Nantgarw Branch Junction with NAN (0.00) 7.58 TAFFS WELL  9.53 TREFFOREST ESTATE MAESMAWR 10.44 Treforest Estate Junction with TTB (0.00) 10.73 Llantrisant Junction/Tonteg Junction with original LTR alignment (joining LTR at 5.12) 11.62 junction with CRY (9.28) 11.65 Treforest Branch Junction with TRZ (14.01) 12.00 TREFFOREST 12.59 PC&N Junction with CAP (14.48) 12.72 PONTYPRIDD 13.03 Pontypridd North Junction with THT 13.23 Pontypridd Northern Junction with POP (0.00) 13.27 Pontypridd Town goods depot 13.56 Pont Shon Norton Junction with NLN 14.61 Clydach Court Junction with YNY 15.44 Stormstown Junction No 1 with YNL/YNY (0.00) 15.46 Stormstown Junction/Ynysydwr Loop Junction No 2 with DPB/YZD 16.20 Abercynon Junction with ABD 16.28 ABERCYNON [formerly A. SOUTH] INCLINE TOP 17.73 QUAKERS YARD 18.03 Quakers Yard Low Level Junction with QYB (15.70) 19.41 Black Lion 19.77 MERTHYR VALE 21.69 TROED-Y-RHIW 23.03 PENTRE BACH 23.62 Brandy Bridge Junction with MRG 24.19 Mardy Junction with MER (5.70) 24.44 MERTHYR TYDFIL  24.51 MERTHYR TYDFIL  Note that 24.19-24.51 was formerly part of MER (5.70-6.22)