| Siedlce to Cividale del Friuli | 578.21 mi (930.53 km) |
| Siedlce to Civita Castellana | 822.40 mi (1,323.53 km) |
| Siedlce to Civitanova Marche | 728.69 mi (1,172.71 km) |
| Siedlce to Civitavecchia | 850.13 mi (1,368.15 km) |
| Siedlce to Civitella in Val di Chiana | 776.44 mi (1,249.56 km) |
| Siedlce to Clusone | 705.54 mi (1,135.45 km) |
| Siedlce to Coccaglio | 719.64 mi (1,158.15 km) |
| Siedlce to Codigoro | 686.31 mi (1,104.51 km) |
| Siedlce to Codogno | 748.59 mi (1,204.74 km) |
| Siedlce to Codroipo | 599.61 mi (964.98 km) |
| Siedlce to Cogoleto | 822.96 mi (1,324.43 km) |
| Siedlce to Colle di Val d'Elsa | 794.52 mi (1,278.66 km) |
| Siedlce to Colle Salvetti | 803.37 mi (1,292.90 km) |
| Siedlce to Collecchio | 751.59 mi (1,209.57 km) |
| Siedlce to Colleferro | 841.12 mi (1,353.64 km) |
