| Distance / km | Town |
|---|---|
| 9.7 | CHEPSTOW |
| 11.6 | PORTISHEAD |
| 13.1 | CAERLEON |
| 13.7 | NEWPORT WALES |
| 15.4 | USK |
| 17.3 | CLEVEDON |
| 18.6 | CWMBRAN |
| 19.1 | BRISTOL |
| 22.1 | PONTYPOOL |
| 22.9 | RISCA |
| 26.2 | ABERSYCHAN |
| 27.6 | KEYNSHAM |
| 27.9 | MONMOUTH |
| 28.8 | ABERTILLERY |
| 29.7 | BLAENAVON |
| 29.9 | WESTON-SUPER-MARE |
| 30.0 | CARDIFF |
| 30.7 | ABERGAVENNY |
| 30.7 | CAERPHILLY |
| 30.9 | PENARTH |