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Mileages are given in the form miles.chains. 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.
MEZ Merthyr Low Level Loop
0.00 junction with YNF (0.22)
0.19 junction with MRG (24.00)