Last update 24 July 2023
Mileages are given in the form miles.chains unless stated otherwise. Figures prefixed with ≈ are approximate, those in parentheses are not on this route but are given for reference. Reference to 'start'/'end' of an asset are as read down the page.
0.00 junction with SWM2 (223.49) 0.40 Genwen Junction with LDZ (0.40) 0.44 junction with CVZ 0.53 Genwen Branch Junction with GEN (0.00) 1.07 BYNEA 1.10 Yspitty Branch Junction with YSZ (0.00) ≈2.73 LLANGENNECH [1] 3.01 LLANGENNECH [2] 3.49 Morlais Junction with SDI2 (10.64) 4.54 Hendy Junction with HDY (0.46) 5.26 PONTARDDULAIS formerly PONTARDULAIS 5.33 Pontardulais/Pontarddulais Junction with SWN (0.00) 7.57 Tynycerig 10.02 Pantyffynnon Junction with GNT 10.08 PANTYFFYNNON 10.58 PARCYRHUN 11.21 AMMANFORD formerly DUFFRYN; TIRYDAIL; A. & TIRYDAIL 11.27 Mountain Branch Junction with MOU (0.00) 13.05 LLANDYBIE formerly LLANDEBIE 13.56 junction with LIM 13.66 junction with PTL 14.46 DERWYDD ROAD 17.19 FFAIRFACH 17.48 Carmarthen Valley Junction with LCL (0.00) 18.07 LLANDEILO formerly LLANDILO 18.17 junction with VOT Note that although Genwen Junction has the same mileage on both LLA and LDZ, the two routes are measured from different points