| Sidcup to Sestu | 943.08 mi (1,517.74 km) |
| Sidcup to Settimo Torinese | 559.06 mi (899.72 km) |
| Sidcup to Seveso | 574.12 mi (923.96 km) |
| Sidcup to Sezze | 919.84 mi (1,480.34 km) |
| Sidcup to Siano | 1,009.93 mi (1,625.33 km) |
| Sidcup to Siena | 766.38 mi (1,233.37 km) |
| Sidcup to Signa | 734.25 mi (1,181.66 km) |
| Sidcup to Silea | 684.31 mi (1,101.29 km) |
| Sidcup to Silvi Paese | 898.54 mi (1,446.06 km) |
| Sidcup to Sinalunga | 784.64 mi (1,262.75 km) |
| Sidcup to Siniscola | 878.24 mi (1,413.38 km) |
| Sidcup to Sinnai | 945.35 mi (1,521.39 km) |
| Sidcup to Siracusa | 1,239.29 mi (1,994.45 km) |
| Sidcup to Solaro | 573.82 mi (923.47 km) |
| Sidcup to Soliera | 679.21 mi (1,093.09 km) |
