| Swansea to Seysses | 4,519.41 mi (7,273.28 km) |
| Swansea to Sin-le-Noble | 4,357.44 mi (7,012.62 km) |
| Swansea to Six-Fours-les-Plages | 4,726.23 mi (7,606.14 km) |
| Swansea to Soissons | 4,398.63 mi (7,078.91 km) |
| Swansea to Soisy-sous-Montmorency | 4,371.53 mi (7,035.30 km) |
| Swansea to Sollies-Pont | 4,732.18 mi (7,615.71 km) |
| Swansea to Somain | 4,364.08 mi (7,023.31 km) |
| Swansea to Sorgues | 4,652.40 mi (7,487.31 km) |
| Swansea to Sotteville-les-Rouen | 4,309.64 mi (6,935.70 km) |
| Swansea to Soyaux | 4,397.94 mi (7,077.80 km) |
| Swansea to Stains | 4,376.11 mi (7,042.67 km) |
| Swansea to Stiring-Wendel | 4,544.96 mi (7,314.41 km) |
| Swansea to Strasbourg | 4,599.00 mi (7,401.38 km) |
| Swansea to Sucy-en-Brie | 4,387.71 mi (7,061.34 km) |
| Swansea to Suresnes | 4,372.31 mi (7,036.55 km) |
