| Siedlce to Sestu | 1,089.14 mi (1,752.80 km) |
| Siedlce to Settimo Torinese | 818.80 mi (1,317.72 km) |
| Siedlce to Seveso | 745.70 mi (1,200.09 km) |
| Siedlce to Sezze | 854.21 mi (1,374.71 km) |
| Siedlce to Siano | 862.75 mi (1,388.46 km) |
| Siedlce to Siena | 793.22 mi (1,276.56 km) |
| Siedlce to Signa | 774.40 mi (1,246.28 km) |
| Siedlce to Silea | 637.28 mi (1,025.60 km) |
| Siedlce to Silvi Paese | 765.07 mi (1,231.26 km) |
| Siedlce to Sinalunga | 787.30 mi (1,267.03 km) |
| Siedlce to Siniscola | 997.36 mi (1,605.09 km) |
| Siedlce to Sinnai | 1,085.89 mi (1,747.57 km) |
| Siedlce to Siracusa | 1,096.86 mi (1,765.23 km) |
| Siedlce to Solaro | 748.93 mi (1,205.29 km) |
| Siedlce to Soliera | 728.96 mi (1,173.15 km) |
