Your Route From Saundersfoot SA69 to St Albans AL3
Route Summary
244 mi
4 hours 13 mins
9
52 Miles
58 Minutes
Recommended travel books and guides
Lonely Planet Best Road Trips Great Britain
Grand Adventure Map: The ultimate map for travels around the UK
The Great British Bucket List: Utterly Unmissable Britain
Great British Walkies: 100 brilliant dog walks
52 Great British Weekends: A Year of Mini Adventures
AA Easy Read Britain 2026 flexi bound
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Route Map
Service Areas Along Route
Swansea West
M O T O, Swansea West Services, M4 Junction 47, Penllergaer, Swansea, West Glamorgan, SA4 9GT
Sarn Park
Sarn Park Motorway Services, Sarn Park Motorway Services Area, M4, Sarn, Bridgend, CF32 9SY
Cardiff West
Moto Services, Cardiff West Motorway Services Area, M4, Pontyclun, Mid Glamorgan, CF72 8SA
Cardiff Gate
Welcome Break Services, Malthouse Avenue, Cardiff Gate Business Park, Pontprennau, Cardiff, South Glamorgan, CF23 8RA
Magor
Magor Motorway Services Area, M4, Magor, Caldicot, Monmouthshire, NP26 3YL
Leigh Delamere
Granada Hospitality Ltd, Leigh Delamere Motorway Services Area, M4, Leigh Delamere, Chippenham, Wiltshire, SN14 6LB
Membury
Welcome Break, M4 Services, Membury Motorway Services Area, Lambourn, Hungerford, Berkshire, RG17 7TZ
Chieveley services
Moto Hospitality Ltd, Chieveley Motorway Services Area, Oxford Road, Hermitage, Thatcham, Berkshire, RG18 9XX
Reading
Reading Motorway Service Area, Burghfield, Reading, Berkshire, RG30 3UQ
Recommended motoring accessories for your car
Car Breakdown Emergency Kit
Zacro Car Bin with 5 Garbage Bags
AA Euro Travel Kit AA6318
HOTOR Car Boot Organiser
Car Seat Organiser
Lewis-Plast Premium 92 Piece First Aid Kit
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Step-by-Step Directions
Head north-west on B4316 towards Stammers Rd
0.0
Continue onto Stammers Rd
0.0
At the roundabout, take the 1st exit onto Milford St/
0.25
Turn left to stay on B4316
1.5
At the roundabout, take the 2nd exit onto A478
0.75
At the roundabout, take the 4th exit onto A477
11.75
At the roundabout, take the 3rd exit onto A40
8.75
At the roundabout, take the 3rd exit and stay on A40
0.5
At Pensarn Roundabout, take the 2nd exit onto A48
11.0
At Cross Hands Roundabout, take the 3rd exit and stay on A48
1.75
Continue onto A48
2.0
At the roundabout, take the 3rd exit onto M4 heading to Caerdydd/
58.0
Swansea West M O T O, Swansea West Services, M4 Junction 47, Penllergaer, Swansea, West Glamorgan, SA4 9GT
Sarn Park Sarn Park Motorway Services, Sarn Park Motorway Services Area, M4, Sarn, Bridgend, CF32 9SY
Cardiff West Moto Services, Cardiff West Motorway Services Area, M4, Pontyclun, Mid Glamorgan, CF72 8SA
Cardiff Gate Welcome Break Services, Malthouse Avenue, Cardiff Gate Business Park, Pontprennau, Cardiff, South Glamorgan, CF23 8RA
Keep right to stay on M4
121.25
Magor Magor Motorway Services Area, M4, Magor, Caldicot, Monmouthshire, NP26 3YL
Leigh Delamere Granada Hospitality Ltd, Leigh Delamere Motorway Services Area, M4, Leigh Delamere, Chippenham, Wiltshire, SN14 6LB
Membury Welcome Break, M4 Services, Membury Motorway Services Area, Lambourn, Hungerford, Berkshire, RG17 7TZ
Chieveley services Moto Hospitality Ltd, Chieveley Motorway Services Area, Oxford Road, Hermitage, Thatcham, Berkshire, RG18 9XX
Reading Reading Motorway Service Area, Burghfield, Reading, Berkshire, RG30 3UQ
At junction 4B, exit towards Watford/
0.5
Take the slip road onto M25
18.75
Last minute travel essentials
Teskyer Electronics Accessories Organiser Bag, Waterproof
Hiluckey Power Bank Portable Charger - 22.5W Fast Charging
Travel Pillow Neck Pillow Memory Foam Travel Pillow
BAGAIL Microfibre Travel Towel, Perfect Travel Towel
Mini Travel Pillow, Soft Down Alternative Pillows
NTONPOWER Travel Extension Lead, travel Essentials
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At junction 21, take the M1 exit to Luton Arpt
0.75
Take the slip road onto M1
1.75
At junction 8, exit onto A414 towards Hemel Hempstead
0.75
Take the A414 slip road to Hemel Hempstead
0.25
Continue onto A414
0.25
At Phoenix Gateway Roundabout, take the 3rd exit onto Green Ln
0.25
At the roundabout, continue straight to stay on Green Ln
0.5
At the roundabout, take the 1st exit
0.0
Continue onto Three Cherry Trees Ln
0.25
Turn right onto Cherry Tree Ln
0.75
Turn right onto Hemel Hempstead Rd/
1.25
Turn left onto Hemel Hempstead Rd
0.5
Turn left onto Flamsteadbury Ln
0.25
Turn right onto North Common
0.25
Turn left onto Lords Mdw
0.0
Arrive at your destination
Don't forget in-car food and drink essentials
Volhoply 14oz Insulated Stainless Steel Coffee Mug
Thermos - Stainless King Red Travel Flask (1.2L)
Sistema KLIP IT PLUS Leakproof Food Storage Containers
BeneLabel Snack Box, Stackable Snack Pot 4 Compartments
SUNWILL Metal Water Bottle Stainless Steel 500ml
Travel Mugs,KETIEE 380ml Insulated Coffee Cup with Leakproof Lid
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