Last update 21 April 2026
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.
11.11 Cymmer South Junction with BAL 11.12 Cymmer West Junction with connection to RSB ≈11.13 intersection bridge over RSB (≈6.05) 11.32 Cymmer North Junction with SMI (9.40)