| Aylesbury to Sestu | 986.67 mi (1,587.89 km) |
| Aylesbury to Settimo Torinese | 605.53 mi (974.50 km) |
| Aylesbury to Seveso | 621.53 mi (1,000.25 km) |
| Aylesbury to Sezze | 966.99 mi (1,556.22 km) |
| Aylesbury to Siano | 1,057.30 mi (1,701.56 km) |
| Aylesbury to Siena | 813.60 mi (1,309.36 km) |
| Aylesbury to Signa | 781.55 mi (1,257.79 km) |
| Aylesbury to Silea | 731.82 mi (1,177.75 km) |
| Aylesbury to Silvi Paese | 946.11 mi (1,522.62 km) |
| Aylesbury to Sinalunga | 831.94 mi (1,338.87 km) |
| Aylesbury to Siniscola | 923.12 mi (1,485.62 km) |
| Aylesbury to Sinnai | 989.05 mi (1,591.72 km) |
| Aylesbury to Siracusa | 1,285.85 mi (2,069.37 km) |
| Aylesbury to Solaro | 621.20 mi (999.72 km) |
| Aylesbury to Soliera | 726.74 mi (1,169.57 km) |
