| Morriston to Sestu | 1,058.86 mi (1,704.06 km) |
| Morriston to Settimo Torinese | 699.95 mi (1,126.47 km) |
| Morriston to Seveso | 725.83 mi (1,168.12 km) |
| Morriston to Sezze | 1,065.57 mi (1,714.87 km) |
| Morriston to Siano | 1,158.67 mi (1,864.70 km) |
| Morriston to Siena | 913.82 mi (1,470.64 km) |
| Morriston to Signa | 883.19 mi (1,421.36 km) |
| Morriston to Silea | 846.72 mi (1,362.66 km) |
| Morriston to Silvi Paese | 1,052.40 mi (1,693.68 km) |
| Morriston to Sinalunga | 933.19 mi (1,501.82 km) |
| Morriston to Siniscola | 1,003.45 mi (1,614.89 km) |
| Morriston to Sinnai | 1,061.83 mi (1,708.84 km) |
| Morriston to Siracusa | 1,376.85 mi (2,215.83 km) |
| Morriston to Solaro | 725.10 mi (1,166.94 km) |
| Morriston to Soliera | 832.70 mi (1,340.10 km) |
