| Royston to Sestu | 982.74 mi (1,581.56 km) |
| Royston to Settimo Torinese | 594.96 mi (957.50 km) |
| Royston to Seveso | 606.67 mi (976.34 km) |
| Royston to Sezze | 953.37 mi (1,534.30 km) |
| Royston to Siano | 1,042.36 mi (1,677.51 km) |
| Royston to Siena | 799.72 mi (1,287.03 km) |
| Royston to Signa | 767.19 mi (1,234.67 km) |
| Royston to Silea | 711.60 mi (1,145.20 km) |
| Royston to Silvi Paese | 929.32 mi (1,495.59 km) |
| Royston to Sinalunga | 817.58 mi (1,315.76 km) |
| Royston to Siniscola | 916.54 mi (1,475.03 km) |
| Royston to Sinnai | 984.91 mi (1,585.05 km) |
| Royston to Siracusa | 1,274.58 mi (2,051.24 km) |
| Royston to Solaro | 606.53 mi (976.11 km) |
| Royston to Soliera | 710.70 mi (1,143.76 km) |
