| Swansea to Stanmore | 4,185.23 mi (6,735.47 km) |
| Swansea to Stannington | 4,086.32 mi (6,576.30 km) |
| Swansea to Stansted Mountfitchet | 4,196.33 mi (6,753.33 km) |
| Swansea to Stanwell | 4,184.04 mi (6,733.57 km) |
| Swansea to Stapleford | 4,109.63 mi (6,613.81 km) |
| Swansea to Staveley | 4,096.99 mi (6,593.47 km) |
| Swansea to Stepney | 4,198.68 mi (6,757.13 km) |
| Swansea to Stevenage | 4,180.91 mi (6,728.53 km) |
| Swansea to Stevenston | 3,907.23 mi (6,288.07 km) |
| Swansea to Stirling | 3,925.21 mi (6,317.02 km) |
| Swansea to Stockport | 4,062.93 mi (6,538.65 km) |
| Swansea to Stocksbridge | 4,082.04 mi (6,569.40 km) |
| Swansea to Stockton-on-Tees | 4,061.14 mi (6,535.78 km) |
| Swansea to Stoke Gifford | 4,101.58 mi (6,600.86 km) |
| Swansea to Stoke-on-Trent | 4,073.16 mi (6,555.12 km) |
