| Romford to Sestu | 950.33 mi (1,529.41 km) |
| Romford to Settimo Torinese | 564.65 mi (908.71 km) |
| Romford to Seveso | 578.44 mi (930.90 km) |
| Romford to Sezze | 924.57 mi (1,487.95 km) |
| Romford to Siano | 1,014.27 mi (1,632.31 km) |
| Romford to Siena | 771.02 mi (1,240.84 km) |
| Romford to Signa | 738.74 mi (1,188.88 km) |
| Romford to Silea | 686.86 mi (1,105.39 km) |
| Romford to Silvi Paese | 902.29 mi (1,452.09 km) |
| Romford to Sinalunga | 789.14 mi (1,269.99 km) |
| Romford to Siniscola | 884.86 mi (1,424.05 km) |
| Romford to Sinnai | 952.55 mi (1,532.99 km) |
| Romford to Siracusa | 1,244.70 mi (2,003.16 km) |
| Romford to Solaro | 578.19 mi (930.51 km) |
| Romford to Soliera | 683.18 mi (1,099.46 km) |
