| Swansea to Selargius | 5,020.18 mi (8,079.20 km) |
| Swansea to Selvazzano Dentro | 4,880.45 mi (7,854.32 km) |
| Swansea to Senago | 4,767.34 mi (7,672.29 km) |
| Swansea to Senigallia | 5,005.78 mi (8,056.03 km) |
| Swansea to Seravezza | 4,874.01 mi (7,843.95 km) |
| Swansea to Seregno | 4,767.42 mi (7,672.41 km) |
| Swansea to Seriate | 4,786.70 mi (7,703.45 km) |
| Swansea to Sermoneta | 5,086.65 mi (8,186.17 km) |
| Swansea to Serramanna | 5,002.99 mi (8,051.53 km) |
| Swansea to Serravalle Pistoiese | 4,902.32 mi (7,889.53 km) |
| Swansea to Sessa Aurunca | 5,138.99 mi (8,270.41 km) |
| Swansea to Sesto Calende | 4,741.53 mi (7,630.76 km) |
| Swansea to Sesto Fiorentino | 4,919.84 mi (7,917.72 km) |
| Swansea to Sesto San Giovanni | 4,773.28 mi (7,681.86 km) |
| Swansea to Sestri Levante | 4,829.05 mi (7,771.61 km) |
