| Sidmouth to Sestu | 987.87 mi (1,589.82 km) |
| Sidmouth to Settimo Torinese | 636.65 mi (1,024.58 km) |
| Sidmouth to Seveso | 666.90 mi (1,073.27 km) |
| Sidmouth to Sezze | 1,002.55 mi (1,613.45 km) |
| Sidmouth to Siano | 1,096.68 mi (1,764.94 km) |
| Sidmouth to Siena | 851.98 mi (1,371.14 km) |
| Sidmouth to Signa | 822.14 mi (1,323.10 km) |
| Sidmouth to Silea | 793.60 mi (1,277.17 km) |
| Sidmouth to Silvi Paese | 993.13 mi (1,598.29 km) |
| Sidmouth to Sinalunga | 871.77 mi (1,402.97 km) |
| Sidmouth to Siniscola | 934.42 mi (1,503.80 km) |
| Sidmouth to Sinnai | 990.95 mi (1,594.78 km) |
| Sidmouth to Siracusa | 1,310.38 mi (2,108.85 km) |
| Sidmouth to Solaro | 665.96 mi (1,071.76 km) |
| Sidmouth to Soliera | 774.05 mi (1,245.72 km) |
