| Swansea to Solofra | 5,193.62 mi (8,358.33 km) |
| Swansea to Somma Lombardo | 4,746.13 mi (7,638.15 km) |
| Swansea to Somma Vesuviana | 5,175.03 mi (8,328.40 km) |
| Swansea to Sommacampagna | 4,842.90 mi (7,793.90 km) |
| Swansea to Sona | 4,840.92 mi (7,790.70 km) |
| Swansea to Sondrio | 4,773.77 mi (7,682.64 km) |
| Swansea to Sora | 5,105.56 mi (8,216.61 km) |
| Swansea to Sorbolo | 4,848.96 mi (7,803.64 km) |
| Swansea to Soresina | 4,807.88 mi (7,737.53 km) |
| Swansea to Sorisole | 4,782.20 mi (7,696.20 km) |
| Swansea to Sorrento | 5,182.92 mi (8,341.10 km) |
| Swansea to Sorso | 4,932.88 mi (7,938.70 km) |
| Swansea to Sortino | 5,360.55 mi (8,626.98 km) |
| Swansea to Soverato Marina | 5,357.48 mi (8,622.03 km) |
| Swansea to Sovicille | 4,943.50 mi (7,955.79 km) |
