Your Route From Milton Keynes MK6 to Carmarthen SA33
Route Summary
213 mi
4 hours 12 mins
11
56 Miles
68 Minutes
Recommended travel books and guides
Grand Adventure Map: The ultimate map for travels around the UK
52 Great British Weekends: A Year of Mini Adventures
AA Easy Read Britain 2026 flexi bound
Great British Walkies: 100 brilliant dog walks
Where to Go When Great Britain and Ireland
Lonely Planet Best Road Trips Great Britain
As an Amazon Associate, we earn from qualifying purchases.
Route Map
Service Areas Along Route
Buckingham services
Mount Pleasant Service Station, London Road, Buckingham, Buckinghamshire, MK18 1SH
Baynards Green services
Baynards Green Service Station, Baynards Green, Bicester, Oxfordshire, OX27 7SG
Cherwell Valley services
Moto Services Ltd, Cherwell Valley Motorway Services Area, Northampton Road, Ardley, Bicester, Oxfordshire, OX27 7RD
Layby (Weston-on-the-Green) services
Weston-on-the-Green, Bicester, Oxfordshire, OX25 3QQ
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
Cardiff West
Moto Services, Cardiff West Motorway Services Area, M4, Pontyclun, Mid Glamorgan, CF72 8SA
Sarn Park
Sarn Park Motorway Services, Sarn Park Motorway Services Area, M4, Sarn, Bridgend, CF32 9SY
Swansea West
M O T O, Swansea West Services, M4 Junction 47, Penllergaer, Swansea, West Glamorgan, SA4 9GT
Pont Abraham
Road Chef Ltd, Pont Abraham Services, M4 Junction 49, Llanedi, Pontarddulais, Swansea, SA4 0FU
Recommended motoring accessories for your car
Zacro Car Bin with 5 Garbage Bags
HOTOR Car Boot Organiser
Lewis-Plast Premium 92 Piece First Aid Kit
Car Seat Organiser
Car Breakdown Emergency Kit
LISEN Retractable Car Phone Charger
As an Amazon Associate, we earn from qualifying purchases.
Step-by-Step Directions
Head south-east on Trubys Garden
0.0
Turn left onto Lloyds
0.0
Turn right onto V7 Saxon St
0.25
At Coffee Hall Roundabout, take the 2nd exit onto H8/
0.5
At Bleak Hall Roundabout, take the 2nd exit and stay on H8/
0.5
At Elfield Park Roundabout, take the 2nd exit and stay on H8/
0.75
At Emerson Roundabout, take the 2nd exit and stay on H8/
0.5
At Wind Mill Hill Roundabout, take the 2nd exit and stay on H8/
0.75
At Tattenhoe Roundabout, take the 2nd exit and stay on H8/
0.75
At the roundabout, take the 2nd exit onto A421
1.0
At the roundabout, take the 2nd exit
0.0
Continue onto A421
1.75
At the roundabout, take the 2nd exit and stay on A421
4.5
At the roundabout, take the 1st exit and stay on A421
0.5
Buckingham services Mount Pleasant Service Station, London Road, Buckingham, Buckinghamshire, MK18 1SH
At the roundabout, take the 2nd exit and stay on A421
0.5
At the roundabout, take the 2nd exit and stay on A421
0.25
At the roundabout, take the 1st exit and stay on A421
0.5
At the roundabout, take the 2nd exit and stay on A421
0.25
At the roundabout, take the 2nd exit onto Tingewick Rd/
0.75
At the roundabout, take the 1st exit onto A421
1.75
At the roundabout, take the 3rd exit and stay on A421
4.0
At Barleymow Roundabout, take the 1st exit onto A43
3.25
Baynards Green services Baynards Green Service Station, Baynards Green, Bicester, Oxfordshire, OX27 7SG
At the roundabout, take the 2nd exit and stay on A43
0.75
Cherwell Valley services Moto Services Ltd, Cherwell Valley Motorway Services Area, Northampton Road, Ardley, Bicester, Oxfordshire, OX27 7RD
At Cherwell Roundabout, take the 1st exit onto the M40(South) slip road to London/
0.0
Continue onto Exit 10
0.5
Last minute travel essentials
Pill Organizer,Pill Dispenser With 7 Large Compartments
Teskyer Electronics Accessories Organiser Bag, Waterproof
Hiluckey Power Bank Portable Charger - 22.5W Fast Charging
Rainberg Microfiber towel (180x90cm), Fast Drying
BAGAIL Microfibre Travel Towel, Perfect Travel Towel
NTONPOWER Travel Extension Lead, travel Essentials
As an Amazon Associate, we earn from qualifying purchases.
Merge onto M40
4.75
At junction 9, take the A41/
0.25
At Wendlebury Interchange, take the 3rd exit onto A34
9.5
Layby (Weston-on-the-Green) services Weston-on-the-Green, Bicester, Oxfordshire, OX25 3QQ
Take the A420 exit towards Swindon/
0.25
At Botley Interchange, take the 3rd exit onto A420
4.75
At the roundabout, take the 2nd exit and stay on A420
3.25
At Kingston Bagpuize Roundabout, take the 2nd exit and stay on A420
11.75
At the roundabout, take the 3rd exit and stay on A420
1.5
At the roundabout, take the 2nd exit and stay on A420
3.5
At the roundabout, take the 2nd exit and stay on A420
0.25
At White Hart, take the 1st exit onto the A419 (South) slip road to M4/
0.25
Merge onto A419
3.25
At Badbury Roundabout, take the 3rd exit onto the M4 slip road to South Wales/
0.5
Merge onto M4
119.75
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
Cardiff West Moto Services, Cardiff West Motorway Services Area, M4, Pontyclun, Mid Glamorgan, CF72 8SA
Sarn Park Sarn Park Motorway Services, Sarn Park Motorway Services Area, M4, Sarn, Bridgend, CF32 9SY
Swansea West M O T O, Swansea West Services, M4 Junction 47, Penllergaer, Swansea, West Glamorgan, SA4 9GT
Pont Abraham Road Chef Ltd, Pont Abraham Services, M4 Junction 49, Llanedi, Pontarddulais, Swansea, SA4 0FU
At the roundabout, take the 2nd exit onto A48
3.75
At Cross Hands Roundabout, take the 3rd exit and stay on A48
11.0
At Pensarn Roundabout, take the 3rd exit onto A40
0.5
At the roundabout, take the 3rd exit and stay on A40
1.5
At the roundabout, take the 1st exit onto A485
0.25
At the roundabout, take the 1st exit onto Dolgwili Rd/
0.5
At the roundabout, take the 2nd exit onto Bronwydd Rd/
1.75
Turn right onto B4301
1.75
Turn left
2.0
Turn right
0.25
Turn left onto Gwili Ter
0.5
Slight left
1.75
Arrive at your destination
Don't forget in-car food and drink essentials
Travel Mugs,KETIEE 380ml Insulated Coffee Cup with Leakproof Lid
Volhoply 14oz Insulated Stainless Steel Coffee Mug
Thermos - Stainless King Red Travel Flask (1.2L)
HASAGEI Travel Mug, Insulated Coffee Cup with Leakproof Lid
Super Sparrow Water Bottle Stainless Steel - Insulated
SUNWILL Metal Water Bottle Stainless Steel 500ml
As an Amazon Associate, we earn from qualifying purchases.
