| Siedlce to Collegno | 828.45 mi (1,333.25 km) |
| Siedlce to Cologno al Serio | 728.46 mi (1,172.35 km) |
| Siedlce to Cologno Monzese | 745.99 mi (1,200.55 km) |
| Siedlce to Colorno | 736.76 mi (1,185.70 km) |
| Siedlce to Comacchio | 691.48 mi (1,112.83 km) |
| Siedlce to Comiso | 1,115.52 mi (1,795.25 km) |
| Siedlce to Como | 739.91 mi (1,190.76 km) |
| Siedlce to Concordia Sagittaria | 613.92 mi (988.00 km) |
| Siedlce to Concorezzo | 741.08 mi (1,192.65 km) |
| Siedlce to Conegliano | 625.34 mi (1,006.39 km) |
| Siedlce to Conselice | 712.09 mi (1,146.00 km) |
| Siedlce to Conselve | 672.92 mi (1,082.96 km) |
| Siedlce to Conversano | 811.02 mi (1,305.22 km) |
| Siedlce to Copertino | 846.13 mi (1,361.71 km) |
| Siedlce to Copparo | 691.53 mi (1,112.91 km) |
