| Postojna to Cividale del Friuli | 43.68 mi (70.29 km) |
| Postojna to Civita Castellana | 256.56 mi (412.90 km) |
| Postojna to Civitanova Marche | 172.70 mi (277.93 km) |
| Postojna to Civitavecchia | 280.91 mi (452.07 km) |
| Postojna to Civitella in Val di Chiana | 204.09 mi (328.45 km) |
| Postojna to Clusone | 205.38 mi (330.53 km) |
| Postojna to Coccaglio | 205.00 mi (329.91 km) |
| Postojna to Codigoro | 120.93 mi (194.62 km) |
| Postojna to Codogno | 222.55 mi (358.15 km) |
| Postojna to Codroipo | 60.77 mi (97.81 km) |
| Postojna to Cogoleto | 287.94 mi (463.40 km) |
| Postojna to Colle di Val d'Elsa | 223.40 mi (359.53 km) |
| Postojna to Colle Salvetti | 236.98 mi (381.38 km) |
| Postojna to Collecchio | 206.87 mi (332.93 km) |
| Postojna to Colleferro | 285.62 mi (459.67 km) |
