Mere to
GlynneathStep by step driving directions and route map on how to go from Mere to Glynneath by road.
Reverse route: Driving directions from Glynneath to Mere
M4, Heads of the Valleys Road
105.1 mi2 hours 25 mins
| Depart onto B3095 Salisbury Street | 500 feet | |
| Turn slight right onto B3095 Castle Street | 3.2 mi | |
| New name straight onto B3092 | 7.7 mi | |
| Roundabout left onto A361 Frome Bypass | 200 feet | |
| Exit roundabout left onto A361 Frome Bypass | 2.6 mi | |
| Roundabout slight left onto A361 Frome Bypass | 0 feet | |
| Exit roundabout slight left onto A361 Frome Bypass | 0.2 mi | |
| Roundabout slight left onto A361 Frome Bypass | 200 feet | |
| Exit roundabout straight onto A361 Frome Bypass | 0.8 mi | |
| Roundabout straight onto A361 | 200 feet | |
| Exit roundabout straight onto A361 | 0.7 mi | |
| Rotary slight left onto A36 | 200 feet | |
| Exit rotary slight left onto A36 | 0.6 mi | |
| Rotary slight left onto A36 | 100 feet | |
| Exit rotary slight left onto A36 | 9.6 mi | |
| Turn right onto Down Lane | 0.2 mi | |
| End of road right onto High Street | 0.2 mi | |
| Turn slight left onto Mill Lane | 0.5 mi | |
| New name straight onto Toll Bridge Road | 500 feet | |
| Turn left onto London Road West | 0.4 mi | |
| Rotary slight left | 400 feet | |
| Exit rotary slight left | 0.2 mi | |
| Merge slight right onto A46 | 4.1 mi | |
| Roundabout slight left onto A46 | 100 feet | |
| Exit roundabout straight onto A46 | 3.5 mi | |
| Rotary straight onto M4 | 100 feet | |
| Exit rotary straight onto M4 | 12.3 mi | |
| Fork slight left onto M48 | 5.3 mi | |
| Off ramp slight left onto M48 | 0.3 mi | |
| Rotary slight left onto A466 Wye Valley Link Road | 800 feet | |
| Exit rotary slight left onto A466 Wye Valley Link Road | 1.1 mi | |
| Rotary left onto A466 Wye Valley Link Road | 300 feet | |
| Exit rotary slight left onto A466 Wye Valley Link Road | 0.9 mi | |
| Roundabout left onto B4293 Itton Road | 100 feet | |
| Exit roundabout left onto B4293 Itton Road | 4.6 mi | |
| Turn slight left onto B4293 | 1.7 mi | |
| Turn left | 1.0 mi | |
| Turn slight right | 1.4 mi | |
| New name straight onto Chepstow Road | 3.9 mi | |
| End of road left onto High Street | 0.2 mi | |
| Roundabout left onto A40 | 200 feet | |
| Exit roundabout slight left onto A40 | 7.7 mi | |
| Roundabout slight left onto A465 Heads of the Valleys Road | 200 feet | |
| Exit roundabout straight onto A465 Heads of the Valleys Road | 29.1 mi | |
| Off ramp slight left onto A465 | 0.4 mi | |
| New name straight onto A4109 Heol-Y-Glyn | 500 feet | |
| Arrive onto A4109 Heol-Y-Glyn |