SmartStops Route Planner

    Your Route From London SW1A to Swansea SA1

    Route Summary

    Total Distance

    186 mi

    Total Duration

    3 hours 31 mins

    Services on Route

    9

    Max Service Gap

    33 Miles

    Longest Time Gap

    33 Minutes

    Recommended travel books and guides

    Great British Walkies: 100 brilliant dog walks

    Great British Walkies: 100 brilliant dog walks
    2026 Philip's Big Easy to Read Britain Road Atlas

    2026 Philip's Big Easy to Read Britain Road Atlas
    The Great British Bucket List: Utterly Unmissable Britain

    The Great British Bucket List: Utterly Unmissable Britain
    AA Easy Read Britain 2026 flexi bound

    AA Easy Read Britain 2026 flexi bound
    52 Great British Weekends: A Year of Mini Adventures

    52 Great British Weekends: A Year of Mini Adventures
    Where to Go When Great Britain and Ireland

    Where to Go When Great Britain and Ireland

    As an Amazon Associate, we earn from qualifying purchases.

    Route Map

    Make this Notebook Trusted to load map: File -> Trust Notebook

    Service Areas Along Route

    1

    Heston

    12.25 miles from start
    33 min from start

    Moto Hospitality Ltd, M4 Services, Phoenix Way, Heston, Hounslow, London, TW5 9NB

    Fuel
    EV Charging
    Toilets
    Coffee
    Snacks
    Fast Food
    Shops
    Supermarket
    Hotel
    Showers
    Amusements
    2

    Reading

    43.25 miles from start
    63 min from start

    Reading Motorway Service Area, Burghfield, Reading, Berkshire, RG30 3UQ

    Fuel
    EV Charging
    Toilets
    Coffee
    Snacks
    Fast Food
    Drive-thru
    Shops
    Supermarket
    Hotel
    Showers
    Amusements
    Outdoor Area
    3

    Chieveley services

    56.75 miles from start
    76 min from start

    Moto Hospitality Ltd, Chieveley Motorway Services Area, Oxford Road, Hermitage, Thatcham, Berkshire, RG18 9XX

    Fuel
    EV Charging
    Toilets
    Coffee
    Snacks
    Fast Food
    Shops
    Supermarket
    Hotel
    Showers
    Amusements
    Outdoor Area
    4

    Membury

    67.75 miles from start
    87 min from start

    Welcome Break, M4 Services, Membury Motorway Services Area, Lambourn, Hungerford, Berkshire, RG17 7TZ

    Fuel
    EV Charging
    Toilets
    Coffee
    Snacks
    Restaurant
    Fast Food
    Drive-thru
    Shops
    Supermarket
    Hotel
    Showers
    Amusements
    Outdoor Area
    5

    Leigh Delamere

    96.0 miles from start
    115 min from start

    Granada Hospitality Ltd, Leigh Delamere Motorway Services Area, M4, Leigh Delamere, Chippenham, Wiltshire, SN14 6LB

    Fuel
    EV Charging
    Toilets
    Coffee
    Snacks
    Fast Food
    Drive-thru
    Shops
    Supermarket
    Hotel
    Showers
    Amusements
    6

    Magor

    129.0 miles from start
    147 min from start

    Magor Motorway Services Area, M4, Magor, Caldicot, Monmouthshire, NP26 3YL

    Fuel
    EV Charging
    Toilets
    Coffee
    Snacks
    Restaurant
    Fast Food
    Drive-thru
    Shops
    Supermarket
    Hotel
    Showers
    Laundry
    Amusements
    Outdoor Area
    7

    Cardiff Gate

    144.5 miles from start
    162 min from start

    Welcome Break Services, Malthouse Avenue, Cardiff Gate Business Park, Pontprennau, Cardiff, South Glamorgan, CF23 8RA

    Fuel
    EV Charging
    Toilets
    Coffee
    Snacks
    Fast Food
    Drive-thru
    Shops
    Supermarket
    Hotel
    Showers
    Amusements
    Outdoor Area
    8

    Cardiff West

    153.25 miles from start
    171 min from start

    Moto Services, Cardiff West Motorway Services Area, M4, Pontyclun, Mid Glamorgan, CF72 8SA

    Fuel
    EV Charging
    Toilets
    Coffee
    Snacks
    Fast Food
    Shops
    Supermarket
    Hotel
    Showers
    Amusements
    Outdoor Area
    9

    Sarn Park

    165.75 miles from start
    183 min from start

    Sarn Park Motorway Services, Sarn Park Motorway Services Area, M4, Sarn, Bridgend, CF32 9SY

    Fuel
    EV Charging
    Toilets
    Coffee
    Snacks
    Fast Food
    Drive-thru
    Shops
    Hotel
    Showers
    Amusements
    Picnic Area

    Recommended motoring accessories for your car

    HOTOR Car Boot Organiser

    HOTOR Car Boot Organiser

    AA Euro Travel Kit AA6318

    AA Euro Travel Kit AA6318
    Car Breakdown Emergency Kit

    Car Breakdown Emergency Kit
    Lewis-Plast Premium 92 Piece First Aid Kit

    Lewis-Plast Premium 92 Piece First Aid Kit
    Car Seat Organiser

    Car Seat Organiser
    iZEEKER 2.5K Dash Cam, 1440P QHD Car Camera

    iZEEKER 2.5K Dash Cam, 1440P QHD Car Camera

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    Step-by-Step Directions

    1

    Head west towards Whitehall/A3212

    0.0

    2

    Exit the roundabout onto Trafalgar Sq/A4

    Continue to follow A4
    Leaving toll zone
    Entering toll zone
    Leaving toll zone in 0.1 mi at Haymarket
    Entering toll zone in 0.2 mi at Waterloo Pl
    Leaving toll zone in 0.5 mi
    Entering toll zone in 0.5 mi

    0.75

    3

    Turn left onto Piccadilly/A4

    0.5

    4

    Keep right to continue on A4

    Leaving toll zone in 0.4 mi at Knightsbridge

    0.5

    5

    Slight left onto Brompton Rd/A4

    Continue to follow A4

    2.75

    6

    Keep right to continue on Hammersmith Flyover/A4

    Continue to follow A4

    1.5

    7

    At Hogarth Roundabout, take the 2nd exit onto Hogarth Ln/A4

    1.25

    8

    Continue onto M4 (signs for Heathrow Arpt/Staines/Hounslow)

    174.0

    Service Area
    • Miles from last waypoint: 5.0

    Heston Moto Hospitality Ltd, M4 Services, Phoenix Way, Heston, Hounslow, London, TW5 9NB

    Fuel EV Charging Toilets Coffee Snacks Fast Food Shops Supermarket Hotel Showers Amusements
    Service Area
    • Miles from last waypoint: 36.0

    Reading Reading Motorway Service Area, Burghfield, Reading, Berkshire, RG30 3UQ

    Fuel EV Charging Toilets Coffee Snacks Fast Food Drive-thru Shops Supermarket Hotel Showers Amusements Outdoor Area
    Service Area
    • Miles from last waypoint: 49.5

    Chieveley services Moto Hospitality Ltd, Chieveley Motorway Services Area, Oxford Road, Hermitage, Thatcham, Berkshire, RG18 9XX

    Fuel EV Charging Toilets Coffee Snacks Fast Food Shops Supermarket Hotel Showers Amusements Outdoor Area
    Service Area
    • Miles from last waypoint: 60.5

    Membury Welcome Break, M4 Services, Membury Motorway Services Area, Lambourn, Hungerford, Berkshire, RG17 7TZ

    Fuel EV Charging Toilets Coffee Snacks Restaurant Fast Food Drive-thru Shops Supermarket Hotel Showers Amusements Outdoor Area
    Service Area
    • Miles from last waypoint: 88.75

    Leigh Delamere Granada Hospitality Ltd, Leigh Delamere Motorway Services Area, M4, Leigh Delamere, Chippenham, Wiltshire, SN14 6LB

    Fuel EV Charging Toilets Coffee Snacks Fast Food Drive-thru Shops Supermarket Hotel Showers Amusements
    Service Area
    • Miles from last waypoint: 121.75

    Magor Magor Motorway Services Area, M4, Magor, Caldicot, Monmouthshire, NP26 3YL

    Fuel EV Charging Toilets Coffee Snacks Restaurant Fast Food Drive-thru Shops Supermarket Hotel Showers Laundry Amusements Outdoor Area
    Service Area
    • Miles from last waypoint: 137.25

    Cardiff Gate Welcome Break Services, Malthouse Avenue, Cardiff Gate Business Park, Pontprennau, Cardiff, South Glamorgan, CF23 8RA

    Fuel EV Charging Toilets Coffee Snacks Fast Food Drive-thru Shops Supermarket Hotel Showers Amusements Outdoor Area
    Service Area
    • Miles from last waypoint: 146.0

    Cardiff West Moto Services, Cardiff West Motorway Services Area, M4, Pontyclun, Mid Glamorgan, CF72 8SA

    Fuel EV Charging Toilets Coffee Snacks Fast Food Shops Supermarket Hotel Showers Amusements Outdoor Area
    Service Area
    • Miles from last waypoint: 158.5

    Sarn Park Sarn Park Motorway Services, Sarn Park Motorway Services Area, M4, Sarn, Bridgend, CF32 9SY

    Fuel EV Charging Toilets Coffee Snacks Fast Food Drive-thru Shops Hotel Showers Amusements Picnic Area
    9

    At junction 42, exit onto A483 towards Swansea/Abertawe

    1.0

    Last minute travel essentials

    Mini Travel Pillow, Soft Down Alternative Pillows

    Mini Travel Pillow, Soft Down Alternative Pillows
    NTONPOWER Travel Extension Lead, travel Essentials

    NTONPOWER Travel Extension Lead, travel Essentials
    Pill Organizer,Pill Dispenser With 7 Large Compartments

    Pill Organizer,Pill Dispenser With 7 Large Compartments
    Travel Pillow Neck Pillow Memory Foam Travel Pillow

    Travel Pillow Neck Pillow Memory Foam Travel Pillow
    Teskyer Electronics Accessories Organiser Bag, Waterproof

    Teskyer Electronics Accessories Organiser Bag, Waterproof
    Hiluckey Power Bank Portable Charger - 22.5W Fast Charging

    Hiluckey Power Bank Portable Charger - 22.5W Fast Charging

    As an Amazon Associate, we earn from qualifying purchases.

    10

    Keep left

    0.25

    11

    Merge onto Fabian Way/A483

    3.25

    12

    Continue onto Quay Parade/A4067

    0.0

    13

    Turn right onto New Cut Rd/A483

    0.0

    14

    Slight left to stay on New Cut Rd/A483

    0.0

    15

    Turn left onto Plantasia

    0.25

    16

    Turn left onto Strand

    0.0

    17

    Turn right onto Welcome Ln

    0.0

    18

    Continue onto College St

    0.0

    19

    Turn left onto The Kingsway

    Destination will be on the left

    0.0

    End

    Arrive at your destination

    Don't forget in-car food and drink essentials

    Volhoply 14oz Insulated Stainless Steel Coffee Mug

    Volhoply 14oz Insulated Stainless Steel Coffee Mug
    HASAGEI Travel Mug, Insulated Coffee Cup with Leakproof Lid

    HASAGEI Travel Mug, Insulated Coffee Cup with Leakproof Lid
    Thermos - Stainless King Red Travel Flask (1.2L)

    Thermos - Stainless King Red Travel Flask (1.2L)
    SUNWILL Metal Water Bottle Stainless Steel 500ml

    SUNWILL Metal Water Bottle Stainless Steel 500ml
    Travel Mugs,KETIEE 380ml Insulated Coffee Cup with Leakproof Lid

    Travel Mugs,KETIEE 380ml Insulated Coffee Cup with Leakproof Lid
    Super Sparrow Water Bottle Stainless Steel - Insulated

    Super Sparrow Water Bottle Stainless Steel - Insulated

    As an Amazon Associate, we earn from qualifying purchases.



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