Your Route From London W7 to Merthyr Tydfil CF47
Route Summary
161 mi
2 hours 57 mins
6
34 Miles
49 Minutes
Recommended travel books and guides
Great British Walkies: 100 brilliant dog walks
Grand Adventure Map: The ultimate map for travels around the UK
The Great British Bucket List: Utterly Unmissable Britain
52 Great British Weekends: A Year of Mini Adventures
Lonely Planet Best Road Trips Great Britain
2026 Philip's Big Easy to Read Britain Road Atlas
As an Amazon Associate, we earn from qualifying purchases.
Route Map
Service Areas Along Route
Reading
Reading Motorway Service Area, Burghfield, Reading, Berkshire, RG30 3UQ
Chieveley services
Moto Hospitality Ltd, Chieveley Motorway Services Area, Oxford Road, Hermitage, Thatcham, Berkshire, RG18 9XX
Membury
Welcome Break, M4 Services, Membury Motorway Services Area, Lambourn, Hungerford, Berkshire, RG17 7TZ
Leigh Delamere
Granada Hospitality Ltd, Leigh Delamere Motorway Services Area, M4, Leigh Delamere, Chippenham, Wiltshire, SN14 6LB
Magor
Magor Motorway Services Area, M4, Magor, Caldicot, Monmouthshire, NP26 3YL
Cardiff Gate
Welcome Break Services, Malthouse Avenue, Cardiff Gate Business Park, Pontprennau, Cardiff, South Glamorgan, CF23 8RA
Recommended motoring accessories for your car
iZEEKER 2.5K Dash Cam, 1440P QHD Car Camera
HOTOR Car Boot Organiser
AA Euro Travel Kit AA6318
Lewis-Plast Premium 92 Piece First Aid Kit
LISEN Retractable Car Phone Charger
Zacro Car Bin with 5 Garbage Bags
As an Amazon Associate, we earn from qualifying purchases.
Step-by-Step Directions
Head north-west on Lower Boston Rd/
0.25
Continue straight to stay on Lower Boston Rd/
0.0
Turn left onto Uxbridge Rd/
0.5
Slight left onto Windmill Ln/
0.5
At the roundabout, take the 2nd exit onto Tentelow Ln/
0.5
At the roundabout, take the 1st exit and stay on Tentelow Ln/
0.5
Turn left onto Norwood Rd/
0.5
Turn right onto New Heston Rd
0.25
At the roundabout, take the 1st exit onto Vicarage Farm Rd
0.0
At the roundabout, take the 2nd exit onto Cranford Ln
1.0
At the roundabout, take the 1st exit onto High St
0.0
Turn right onto The Parkway/
0.5
Last minute travel essentials
Teskyer Electronics Accessories Organiser Bag, Waterproof
BAGAIL Microfibre Travel Towel, Perfect Travel Towel
Hiluckey Power Bank Portable Charger - 22.5W Fast Charging
Mini Travel Pillow, Soft Down Alternative Pillows
Pill Organizer,Pill Dispenser With 7 Large Compartments
Travel Pillow Neck Pillow Memory Foam Travel Pillow
As an Amazon Associate, we earn from qualifying purchases.
At Cranford Parkway Interchange, take the 2nd exit onto the M4 slip road to Heathrow Airport/
0.25
Merge onto M4
135.5
Reading Reading Motorway Service Area, Burghfield, Reading, Berkshire, RG30 3UQ
Chieveley services Moto Hospitality Ltd, Chieveley Motorway Services Area, Oxford Road, Hermitage, Thatcham, Berkshire, RG18 9XX
Membury Welcome Break, M4 Services, Membury Motorway Services Area, Lambourn, Hungerford, Berkshire, RG17 7TZ
Leigh Delamere Granada Hospitality Ltd, Leigh Delamere Motorway Services Area, M4, Leigh Delamere, Chippenham, Wiltshire, SN14 6LB
Magor Magor Motorway Services Area, M4, Magor, Caldicot, Monmouthshire, NP26 3YL
Cardiff Gate Welcome Break Services, Malthouse Avenue, Cardiff Gate Business Park, Pontprennau, Cardiff, South Glamorgan, CF23 8RA
At junction 32, take the A470 exit to Cardiff(N)/
0.25
At Coryton Gyratory/
0.0
Turn right onto Northern Ave/
11.0
At Abercynon Roundabout, take the 2nd exit and stay on A470
5.5
At Abercanaid Roundabout, take the 2nd exit and stay on A470
1.5
At Rhyd-y-Car Roundabout, take the 3rd exit onto A4102
0.25
At the roundabout, take the 2nd exit and stay on A4102
0.25
At the roundabout, take the 1st exit onto A4054
0.25
Turn left onto River Taff Central Link/
0.25
Turn left onto Ave De Clichy/
0.25
Arrive at your destination
Don't forget in-car food and drink essentials
Travel Mugs,KETIEE 380ml Insulated Coffee Cup with Leakproof Lid
Thermos - Stainless King Red Travel Flask (1.2L)
Sistema KLIP IT PLUS Leakproof Food Storage Containers
Volhoply 14oz Insulated Stainless Steel Coffee Mug
BeneLabel Snack Box, Stackable Snack Pot 4 Compartments
SUNWILL Metal Water Bottle Stainless Steel 500ml
As an Amazon Associate, we earn from qualifying purchases.
