| Route | South Wales Main Line (SWML) |
| Section | Gloucester Yard Jn to Johnston |
| Maps | Interactive: SWM2 • Minimaps: Gloucester , ELR change SAW-SSS , Chepstow , Severn Tunnel , Newport , Newport (West) , Cardiff (East) , Heath , Cardiff , Pontyclun , Bridgend , ELR change OVE-POR , Margham , Port Talbot , Briton Ferry , Neath , Llansamlet , Swansea , Llanelli , Kidwelly , Carmarthen , Whitland , Clarbeston Road , Milford Haven |
| Urban Areas | Gloucester → Newport → Cardiff → Swansea → Llanelli → Carmarthen |
| ELR Extent | 113M 0078y to 280M 1549y • 167.836 miles • 270.106 km ⓘ |
| Track ID Extents | ☐ 113M 0078y to 113M 0161y • 0.047 miles • 0.076 km |
| ☒ 113M 0161y to 280M 1547y • 167.787 miles • 270.028 km | |
| ☐ 280M 1547y to 280M 1549y • 0.001 miles • 0.002 km | |
| Grouping | SWM1 , SWM2 |
| Neighbours | BAG2 , BAL , BAN1 , BAN2 , BGL1 , BRY , BSW , BUT , CAM , CAN , CCC , CCD , CEJ , CHL , CLL , CNW , CRL , CWT , ELY , EUB , EUJ , GAE , GNY2 , HNL1 , KID1 , KID2 , LLA , LLY , MAI , MCS , MIL , MLS , MRJ , NAB , NLL , NLP , NWL , NWN , OVE , PEM , RAD , ROA , ROC , SAW , SBK1 , SBK2 , SDI1 , SDI2 , SWA , SWL , VOG , VON , WYE |
| NR Region | 🟧 Wales & Western |
| TRACKmaps | 🟠 Western & Wales |
| LOR | 🟠 GW490 Gloucester Yard Jn to Horton Road Jn 🟠 GW700 Gloucester Barnwood Jn to Severn Tunnel Jn 🟠 GW710 Llanwern Works East-West (via Steelwork Service Lines) 🟠 GW900 Pilning to Fishguard Harbour 🟠 GW960 Clarbeston Road to Milford Haven |
| From | To | Nearest Place | District / County | Proximity |
|---|---|---|---|---|
| 113 | 114 | Barton | Gloucestershire - Gloucester | Near → Distant |
| 114 | 114 ● | Gloucester | Gloucestershire - Gloucester | Distant |
| 114 ● | 114 ● | Kingsholm | Gloucestershire - Gloucester | Distant |
| 114 ● | 114 ●● | Gloucester | Gloucestershire - Gloucester | Distant |
| 114 ●● | 114 ●●● | The Island | Gloucestershire - Gloucester | Near → Distant |
| 114 ●●● | 115 ● | Pool Meadow | Gloucestershire - Gloucester | Near |
| 115 ● | 116 ●● | Over | Gloucestershire - Tewkesbury | Near → Remote |
| 116 ●● | 117 ● | Highnam | Gloucestershire - Tewkesbury | Remote |
| 117 ● | 118 ●●● | Minsterworth | Gloucestershire - Tewkesbury | Distant → Remote |
| 118 ●●● | 119 ●●● | Oakle Street | Gloucestershire - Forest of Dean | Near → Remote |
| 119 ●●● | 120 ●● | Lower Ley | Gloucestershire - Forest of Dean | Remote |
| 120 ●● | 121 | Upper Ley | Gloucestershire - Forest of Dean | Remote |
| 121 | 122 ● | Northwood Green | Gloucestershire - Forest of Dean | Near → Remote |
| 122 ● | 123 ● | Westbury-on-Severn | Gloucestershire - Forest of Dean | Near → Remote |
| 123 ● | 124 ●● | Broadoak | Gloucestershire - Forest of Dean | Adjacent → Remote |
| 124 ●● | 125 ●●● | Newnham | Gloucestershire - Forest of Dean | Near → Remote |
| 125 ●●● | 127 | Bullo | Gloucestershire - Forest of Dean | Near → Remote |
| 127 | 128 ● | Awre | Gloucestershire - Forest of Dean | Remote |
| 128 ● | 130 | Gatcombe | Gloucestershire - Forest of Dean | Adjacent → Remote |
| 130 | 130 | Etloe | Gloucestershire - Forest of Dean | Near → Distant |
| 130 | 131 ●● | Purton | Gloucestershire - Forest of Dean | Adjacent → Remote |
| 131 ●● | 132 ●●● | Naas | Gloucestershire - Forest of Dean | Near → Remote |
| 132 ●●● | 133 ●● | Tutnalls | Gloucestershire - Forest of Dean | Distant → Remote |
| 133 ●● | 134 ●●● | Aylburton | Gloucestershire - Forest of Dean | Remote |
| 134 ●●● | 135 ● | Alvington | Gloucestershire - Forest of Dean | Remote |
| 135 ● | 137 | Plusterrwine | Gloucestershire - Forest of Dean | Distant → Remote |
| 137 | 137 | High Woolaston | Gloucestershire - Forest of Dean | Remote |
| 137 | 138 ● | Stroat | Gloucestershire - Forest of Dean | Distant → Remote |
| 138 ● | 139 | Wibdon | Gloucestershire - Forest of Dean | Distant → Remote |
| 139 | 139 ●●● | Tidenham | Gloucestershire - Forest of Dean | Remote |
| 139 ●●● | 140 ●● | Old Bishton | Gloucestershire - Forest of Dean | Distant → Remote |
| 140 ●● | 141 | Tutshill | Gloucestershire - Forest of Dean | Distant |
| 141 | 141 ● | Chepstow | Monmouthshire | Near → Distant |
| 141 ● | 141 ●●● | Hardwick | Monmouthshire | Near → Distant |
| 141 ●●● | 142 ●● | Bulwark | Monmouthshire | Near → Remote |
| 142 ●● | 143 ● | Beachley | Gloucestershire - Forest of Dean | Remote |
| 143 ● | 143 ●●● | Bulwark | Monmouthshire | Remote |
| 143 ●●● | 144 ●● | Mathern | Monmouthshire | Remote |
| 144 ●● | 146 | Black Rock | Monmouthshire | Adjacent → Remote |
| 146 | 147 | Portskewett | Monmouthshire | Near → Remote |
| 147 | 148 | Caldicot | Monmouthshire | Distant → Remote |
| 148 | 149 | Rogiet | Monmouthshire | Near → Remote |
| 149 | 149 ●●● | Llanfihangel near Rogiet | Monmouthshire | Near → Remote |
| 149 ●●● | 150 ●●● | Undy | Monmouthshire | Adjacent → Remote |
| 150 ●●● | 150 ●●● | Whitewall Common | Monmouthshire | Near |
| 150 ●●● | 151 ●● | Magor | Monmouthshire | Near → Distant |
| 151 ●● | 152 ●● | Llandevenny | Monmouthshire | Adjacent → Remote |
| 152 ●● | 154 | Bishton | Newport | Near → Remote |
| 154 | 155 ●● | Llanwern | Newport | Distant → Remote |
| 155 ●● | 155 ●● | Ringland | Newport | Remote |
| 155 ●● | 155 ●●● | Lawrence Hill | Newport | Remote |
| 155 ●●● | 156 ● | Alway | Newport | Distant → Remote |
| 156 ● | 156 ●● | Liswerry | Newport | Near → Distant |
| 156 ●● | 157 | Somerton | Newport | Near → Distant |
| 157 | 157 ●● | Maindee | Newport | Near → Distant |
| 157 ●● | 158 | Barnardtown | Newport | Near |
| 158 | 158 | East Usk | Newport | Near |
| 158 | 158 ● | Marshes | Newport | Near |
| 158 ● | 158 ●●● | Gold Tops | Newport | Adjacent → Near |
| 158 ●●● | 159 | Clytha Park | Newport | Near |
| 159 | 159 | St Woolos | Newport | Near |
| 159 | 159 ●● | Stow Park | Newport | Near → Distant |
| 159 ●● | 159 ●● | Stelvio | Newport | Distant |
| 159 ●● | 159 ●● | Gaer | Newport | Distant |
| 159 ●● | 160 ●● | Level of Mendalgief | Newport | Distant → Remote |
| 160 ●● | 160 ●● | Maes-glas | Newport | Remote |
| 160 ●● | 161 ●● | Duffryn | Newport | Remote |
| 161 ●● | 162 ● | Celtic Lakes | Newport | Remote |
| 162 ● | 163 | Coedkernew | Newport | Remote |
| 163 | 164 ●● | Marshfield | Newport | Distant → Remote |
| 164 ●● | 165 | Pengam | Newport | Remote |
| 165 | 165 ●● | St Mellons | Cardiff | Remote |
| 165 ●● | 166 | Trowbridge | Cardiff | Remote |
| 166 | 166 ● | Newton | Cardiff | Remote |
| 166 ● | 167 ●● | Pwll-Mawr | Cardiff | Near → Remote |
| 167 ●● | 168 ● | Pengam | Cardiff | Near → Remote |
| 168 ● | 168 ●● | Tremorfa | Cardiff | Distant |
| 168 ●● | 169 ● | Splott | Cardiff | Adjacent → Distant |
| 169 ● | 169 ●●● | Adamsdown | Cardiff | Near → Distant |
| 169 ●●● | 170 | Cardiff | Cardiff | Near → Distant |
| 170 | 170 ●● | Central | Cardiff | Near → Distant |
| 170 ●● | 171 ● | Riverside | Cardiff | Adjacent → Distant |
| 171 ● | 171 ●●● | Canton | Cardiff | Near → Distant |
| 171 ●●● | 172 ●● | Victoria Park | Cardiff | Near → Remote |
| 172 ●● | 172 ●●● | Llandaff | Cardiff | Remote |
| 172 ●●● | 173 | Fairwater | Cardiff | Distant → Remote |
| 173 | 173 ●●● | Ely | Cardiff | Distant → Remote |
| 173 ●●● | 174 ●●● | St Fagans | Cardiff | Near → Remote |
| 174 ●●● | 175 ● | Drope | Vale of Glamorgan | Distant → Remote |
| 175 ● | 176 | St George’s | Vale of Glamorgan | Adjacent → Distant |
| 176 | 177 ●● | Peterston-super-Ely | Vale of Glamorgan | Adjacent → Remote |
| 177 ●● | 178 | Pendoylan | Vale of Glamorgan | Remote |
| 178 | 179 ●● | Clawdd-côch | Vale of Glamorgan | Remote |
| 179 ●● | 181 | Miskin | Rhondda Cynon Taf | Near → Remote |
| 181 | 182 ●● | Pontyclun | Rhondda Cynon Taf | Adjacent → Remote |
| 182 ●● | 184 | Llanharan | Rhondda Cynon Taf | Adjacent → Remote |
| 184 | 184 ● | Dolau | Rhondda Cynon Taf | Near |
| 184 ● | 184 ●● | Bryncae | Rhondda Cynon Taf | Near |
| 184 ●● | 185 | Brynna | Rhondda Cynon Taf | Near → Distant |
| 185 | 185 ●●● | Brynnau Gwynion | Rhondda Cynon Taf | Adjacent → Distant |
| 185 ●●● | 186 ● | Pen-prysg | Bridgend | Near → Distant |
| 186 ● | 187 ●● | Pencoed | Bridgend | Adjacent → Remote |
| 187 ●● | 188 ●●● | Coychurch | Bridgend | Near → Remote |
| 188 ●●● | 189 | Waterton | Bridgend | Distant |
| 189 | 189 ●●● | Brackla | Bridgend | Distant → Remote |
| 189 ●●● | 190 ●● | Tremains | Bridgend | Adjacent → Remote |
| 190 ●● | 191 | Bridgend | Bridgend | Near → Distant |
| 191 | 191 | Newcastle | Bridgend | Distant |
| 191 | 191 ●●● | Wild Mill | Bridgend | Near → Distant |
| 191 ●●● | 192 ● | Pen-y-fai | Bridgend | Distant |
| 192 ● | 193 ●● | Court Colman | Bridgend | Near → Remote |
| 193 ●● | 195 | Cefn Cribwr | Bridgend | Remote |
| 195 | 195 ●● | Kenfig Hill | Bridgend | Remote |
| 195 ●● | 196 ●● | Pyle | Bridgend | Near → Remote |
| 196 ●● | 197 ● | North Cornelly | Bridgend | Distant → Remote |
| 197 ● | 198 | Mawdlam | Bridgend | Remote |
| 198 | 199 ● | Eglwys Nunydd | Neath Port Talbot | Remote |
| 199 ● | 200 | Cwrt-y-defaid | Neath Port Talbot | Remote |
| 200 | 201 ●● | Margam | Neath Port Talbot | Near → Remote |
| 201 ●● | 202 ● | Taibach | Neath Port Talbot | Near → Remote |
| 202 ● | 203 ●● | Port Talbot | Neath Port Talbot | Adjacent → Remote |
| 203 ●● | 203 ●● | Aberavon | Neath Port Talbot | Remote |
| 203 ●● | 204 ● | Sandfields | Neath Port Talbot | Remote |
| 204 ● | 205 ● | Baglan | Neath Port Talbot | Near → Remote |
| 205 ● | 206 | Briton Ferry | Neath Port Talbot | Near → Remote |
| 206 | 206 ● | Shelone | Neath Port Talbot | Near → Distant |
| 206 ● | 206 ●● | Brynhyfryd | Neath Port Talbot | Near → Distant |
| 206 ●● | 206 ●●● | Cwrt Sart | Neath Port Talbot | Near |
| 206 ●●● | 207 ● | Penrhiwtyn | Neath Port Talbot | Near |
| 207 ● | 207 ●●● | Pencaerau | Neath Port Talbot | Near → Distant |
| 207 ●●● | 208 | Mount Pleasant | Neath Port Talbot | Distant |
| 208 | 208 ●●● | Neath | Neath Port Talbot | Near → Distant |
| 208 ●●● | 208 ●●● | Rhydding | Neath Port Talbot | Distant → Remote |
| 208 ●●● | 210 | Neath Abbey | Neath Port Talbot | Adjacent → Remote |
| 210 | 211 | Skewen | Neath Port Talbot | Near → Remote |
| 211 | 211 ● | Lon-las | Swansea | Distant → Remote |
| 211 ● | 211 ●●● | Llwynbrwydrau | Swansea | Adjacent → Distant |
| 211 ●●● | 212 | Peniel Green | Swansea | Adjacent → Near |
| 212 | 212 ●● | Tai’r-ysgol | Swansea | Adjacent → Near |
| 212 ●● | 212 ●●● | Pwllygrafel | Swansea | Near |
| 212 ●●● | 213 ● | Cae-maes-y-bar | Swansea | Adjacent → Distant |
| 213 ● | 213 ●●● | Cwm | Swansea | Near → Distant |
| 213 ●●● | 214 | Pentre’r-Gaseg | Swansea | Distant |
| 214 | 214 ●● | Plas-Marl | Swansea | Near → Distant |
| 214 ●● | 215 | Landore | Swansea | Adjacent → Near |
| 215 | 215 ● | Hafod | Swansea | Near → Distant |
| 215 ● | 215 ●● | Cae-Bricks | Swansea | Near → Distant |
| 215 ●● | 215 ●●● | Cwmbwrla | Swansea | Adjacent → Near |
| 215 ●●● | 216 | Mayhill | Swansea | Near |
| 216 | 216 ● | Cwmdu | Swansea | Near → Distant |
| 216 ● | 216 ●● | Gendros | Swansea | Distant |
| 216 ●● | 217 ● | Cockett | Swansea | Adjacent → Distant |
| 217 ● | 218 | Fforest-fach | Swansea | Distant → Remote |
| 218 | 219 | Waunarlwydd | Swansea | Near → Remote |
| 219 | 220 ● | Gowerton | Swansea | Adjacent → Remote |
| 220 ● | 221 ●●● | Loughor | Swansea | Distant → Remote |
| 221 ●●● | 223 | Bynea | Carmarthenshire | Distant → Remote |
| 223 | 223 ●●● | Llwynhendy | Carmarthenshire | Remote |
| 223 ●●● | 224 ●● | Morfa | Carmarthenshire | Near → Remote |
| 224 ●● | 225 | Ty-isaf | Carmarthenshire | Adjacent → Near |
| 225 | 225 ●●● | Seaside | Carmarthenshire | Near → Distant |
| 225 ●●● | 226 ● | Sandy | Carmarthenshire | Near → Remote |
| 226 ● | 227 ●●● | Pwll | Carmarthenshire | Near → Remote |
| 227 ●●● | 228 ●●● | Dyfatty | Carmarthenshire | Adjacent → Remote |
| 228 ●●● | 229 ● | Burry Port | Carmarthenshire | Adjacent → Distant |
| 229 ● | 230 | Furnace | Carmarthenshire | Near → Distant |
| 230 | 232 | Pembrey | Carmarthenshire | Near → Remote |
| 232 | 232 ●●● | Llandyry | Carmarthenshire | Remote |
| 232 ●●● | 234 ●●● | Kidwelly | Carmarthenshire | Distant → Remote |
| 234 ●●● | 235 ●●● | Llansaint | Carmarthenshire | Remote |
| 235 ●●● | 237 ●● | St Ishmael | Carmarthenshire | Adjacent → Remote |
| 237 ●● | 238 | Broadlay | Carmarthenshire | Distant → Remote |
| 238 | 239 ●● | Ferryside | Carmarthenshire | Adjacent → Remote |
| 239 ●● | 241 ●● | Pant Yr Athro | Carmarthenshire | Remote |
| 241 ●● | 242 | Llangain | Carmarthenshire | Remote |
| 242 | 244 | Croesyceiliog | Carmarthenshire | Distant → Remote |
| 244 | 245 | Pibwrlŵyd | Carmarthenshire | Adjacent → Remote |
| 245 | 245 ● | Pen-sarn | Carmarthenshire | Distant |
| 245 ● | 246 | Johnstown | Carmarthenshire | Near → Distant |
| 246 | 248 | Llanllwch | Carmarthenshire | Near → Remote |
| 248 | 249 | Merthyr | Carmarthenshire | Remote |
| 249 | 252 | Bancyfelin | Carmarthenshire | Near → Remote |
| 252 | 253 ●● | St Clears | Carmarthenshire | Remote |
| 253 ●● | 255 | Pwll-trap | Carmarthenshire | Remote |
| 255 | 257 ●● | Pont-y-Fenni | Carmarthenshire | Near → Remote |
| 257 ●● | 260 | Whitland | Carmarthenshire | Near → Remote |
| 260 | 260 ●● | Cwmfelin-boeth | Carmarthenshire | Remote |
| 260 ●● | 261 ●● | Rhydywrach | Carmarthenshire | Remote |
| 261 ●● | 263 ● | Llanfallteg West | Carmarthenshire | Adjacent → Remote |
| 263 ● | 265 ● | Clunderwen | Pembrokeshire | Adjacent → Remote |
| 265 ● | 265 ● | Bethesda | Pembrokeshire | Remote |
| 265 ● | 267 ●● | Gelli | Pembrokeshire | Near → Remote |
| 267 ●● | 268 | Bletherston | Pembrokeshire | Remote |
| 268 | 269 ●●● | Clarbeston | Pembrokeshire | Remote |
| 269 ●●● | 271 ●●● | Clarbeston Road | Pembrokeshire | Adjacent → Remote |
| 271 ●●● | 272 | Bethlehem | Pembrokeshire | Remote |
| 272 | 273 ●● | New Bridge | Pembrokeshire | Adjacent → Remote |
| 273 ●● | 273 ●●● | Poyston Cross | Pembrokeshire | Remote |
| 273 ●●● | 275 | Crundale | Pembrokeshire | Remote |
| 275 | 275 ●●● | Prendergast | Pembrokeshire | Distant → Remote |
| 275 ●●● | 276 ●●● | The Marsh | Pembrokeshire | Adjacent → Remote |
| 276 ●●● | 278 | Merlin’s Bridge | Pembrokeshire | Near → Remote |
| 278 | 278 ●●● | Skerryford | Pembrokeshire | Remote |
| 278 ●●● | 279 ● | Dreenhill | Pembrokeshire | Remote |
| 279 ● | 280 ● | Pope Hill | Pembrokeshire | Remote |
| 280 ● | 280 ●●● | Johnston | Pembrokeshire | Adjacent → Remote |
| From | To | Country | Administrative Area |
|---|---|---|---|
| 113 | 143 | England | Gloucestershire |
| 143 | 151 ●● | Wales | Monmouthshire |
| 151 ●● | 164 ● | Wales | Newport |
| 164 ● | 174 ●● | Wales | Cardiff |
| 174 ●● | 179 ● | Wales | Vale of Glamorgan |
| 179 ● | 185 | Wales | Rhondda, Cynon, Taff |
| 185 | 196 ●●● | Wales | Bridgend |
| 196 ●●● | 210 ●● | Wales | Neath Port Talbot |
| 210 ●● | 221 ●●● | Wales | Swansea |
| 221 ●●● | 264 ●● | Wales | Carmarthenshire |
| 264 ●● | 280 ●●● | Wales | Pembrokeshire |