| South River to Sestu | 4,246.09 mi (6,833.43 km) |
| South River to Settimo Torinese | 3,992.29 mi (6,424.96 km) |
| South River to Seveso | 4,035.34 mi (6,494.24 km) |
| South River to Sezze | 4,347.21 mi (6,996.15 km) |
| South River to Siano | 4,444.57 mi (7,152.84 km) |
| South River to Siena | 4,207.13 mi (6,770.72 km) |
| South River to Signa | 4,181.21 mi (6,729.01 km) |
| South River to Silea | 4,169.41 mi (6,710.02 km) |
| South River to Silvi Paese | 4,355.44 mi (7,009.40 km) |
| South River to Sinalunga | 4,228.16 mi (6,804.57 km) |
| South River to Siniscola | 4,229.09 mi (6,806.06 km) |
| South River to Sinnai | 4,251.10 mi (6,841.49 km) |
| South River to Siracusa | 4,612.69 mi (7,423.40 km) |
| South River to Solaro | 4,033.94 mi (6,492.00 km) |
| South River to Soliera | 4,141.56 mi (6,665.19 km) |
