| Piraeus to Cologno al Serio | 889.71 mi (1,431.85 km) |
| Piraeus to Cologno Monzese | 905.28 mi (1,456.90 km) |
| Piraeus to Colorno | 838.08 mi (1,348.77 km) |
| Piraeus to Comacchio | 754.94 mi (1,214.95 km) |
| Piraeus to Comiso | 500.78 mi (805.93 km) |
| Piraeus to Como | 923.18 mi (1,485.71 km) |
| Piraeus to Concordia Sagittaria | 773.89 mi (1,245.46 km) |
| Piraeus to Concorezzo | 905.02 mi (1,456.49 km) |
| Piraeus to Conegliano | 799.62 mi (1,286.87 km) |
| Piraeus to Conselice | 762.36 mi (1,226.89 km) |
| Piraeus to Conselve | 788.71 mi (1,269.31 km) |
| Piraeus to Conversano | 406.05 mi (653.47 km) |
| Piraeus to Copertino | 340.24 mi (547.56 km) |
| Piraeus to Copparo | 776.89 mi (1,250.29 km) |
| Piraeus to Corato | 444.94 mi (716.07 km) |
