Last update 5 October 2019
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.
13.03 Pontypridd North Junction with CAM 13.26 Rhondda Cutting Junction with POP (0.17) 13.50 Coke ovens yard 13.72 GYFEILLON 14.59 Trehafod Junction with CTD (16.53) 14.72 TREHAFOD 15.08 Eirw Branch Junction with EIW ≈15.09 HAFOD 15.42 Llwyncelyn 16.10 PORTH  16.13 Rhondda Fach Junction North with MDY 16.21 PORTH  16.26 Cymmer Level 16.39 Troedyrhiw colliery 16.70 Dinas siding 17.30 PANDY [possibly at 17.23] 17.41 DINAS RHONDDA [formerly D. MID GLAMORGAN] 18.03 TONYPANDY [formerly T. AND TREALAW] 18.11 Pwllyrhebog Junction with PYZ 18.39 Llwynypia Lower 19.07 LLWYNYPIA 20.02 Ystrad gas siding 20.05 YSTRAD RHONDDA 20.32 GELLI 20.53 Maaendy Ystrad 20.76 TON PENTRE 21.28 PENTRE 21.45 Ty Ny Bedw 21.50 Cwm Parc Junction with Park colliery lines 22.02 TREORCHY 22.34 TYLACOCH 22.61 Ynyswen siding 22.70 YNYSWEN 23.08 Ynysfeio 23.29 Bute Merthyr 23.46 Treherbert locomotive depot 23.54 TREHERBERT 23.71 Treherbert Junction with RSB (0.00) 24.04 end of sidings 24.27 Dunraven Junction with BLA 24.43 BLAENCWM [never opened] 24.46 end of line Note that 24.27-24.46 was originally called Dunraven Siding