| Belfast to Solofra | 1,345.75 mi (2,165.77 km) |
| Belfast to Somma Lombardo | 890.58 mi (1,433.26 km) |
| Belfast to Somma Vesuviana | 1,330.35 mi (2,141.00 km) |
| Belfast to Sommacampagna | 974.97 mi (1,569.06 km) |
| Belfast to Sona | 972.74 mi (1,565.47 km) |
| Belfast to Sondrio | 903.90 mi (1,454.69 km) |
| Belfast to Sora | 1,258.18 mi (2,024.84 km) |
| Belfast to Sorbolo | 990.09 mi (1,593.39 km) |
| Belfast to Soresina | 948.18 mi (1,525.95 km) |
| Belfast to Sorisole | 918.55 mi (1,478.27 km) |
| Belfast to Sorrento | 1,341.76 mi (2,159.36 km) |
| Belfast to Sorso | 1,162.96 mi (1,871.61 km) |
| Belfast to Sortino | 1,558.23 mi (2,507.73 km) |
| Belfast to Soverato Marina | 1,518.67 mi (2,444.06 km) |
| Belfast to Sovicille | 1,097.90 mi (1,766.89 km) |
