| Upminster to Sestu | 947.54 mi (1,524.92 km) |
| Upminster to Settimo Torinese | 561.55 mi (903.72 km) |
| Upminster to Seveso | 575.19 mi (925.67 km) |
| Upminster to Sezze | 921.35 mi (1,482.78 km) |
| Upminster to Siano | 1,011.02 mi (1,627.08 km) |
| Upminster to Siena | 767.80 mi (1,235.66 km) |
| Upminster to Signa | 735.50 mi (1,183.68 km) |
| Upminster to Silea | 683.50 mi (1,099.98 km) |
| Upminster to Silvi Paese | 898.99 mi (1,446.78 km) |
| Upminster to Sinalunga | 785.90 mi (1,264.79 km) |
| Upminster to Siniscola | 881.94 mi (1,419.34 km) |
| Upminster to Sinnai | 949.75 mi (1,528.47 km) |
| Upminster to Siracusa | 1,241.57 mi (1,998.12 km) |
| Upminster to Solaro | 574.95 mi (925.29 km) |
| Upminster to Soliera | 679.89 mi (1,094.18 km) |
