| Portchester to Sestu | 938.41 mi (1,510.23 km) |
| Portchester to Settimo Torinese | 568.87 mi (915.51 km) |
| Portchester to Seveso | 592.23 mi (953.09 km) |
| Portchester to Sezze | 933.72 mi (1,502.67 km) |
| Portchester to Siano | 1,026.11 mi (1,651.36 km) |
| Portchester to Siena | 781.36 mi (1,257.47 km) |
| Portchester to Signa | 750.34 mi (1,207.55 km) |
| Portchester to Silea | 712.25 mi (1,146.25 km) |
| Portchester to Silvi Paese | 918.68 mi (1,478.48 km) |
| Portchester to Sinalunga | 800.48 mi (1,288.25 km) |
| Portchester to Siniscola | 878.75 mi (1,414.21 km) |
| Portchester to Sinnai | 941.07 mi (1,514.50 km) |
| Portchester to Siracusa | 1,247.87 mi (2,008.25 km) |
| Portchester to Solaro | 591.57 mi (952.04 km) |
| Portchester to Soliera | 698.90 mi (1,124.77 km) |
