| Porcia to Cognac | 622.84 mi (1,002.37 km) |
| Porcia to Cogolin | 353.13 mi (568.30 km) |
| Porcia to Colmar | 287.58 mi (462.82 km) |
| Porcia to Colombes | 525.08 mi (845.03 km) |
| Porcia to Colomiers | 575.93 mi (926.88 km) |
| Porcia to Combs-la-Ville | 506.25 mi (814.73 km) |
| Porcia to Comines | 550.91 mi (886.61 km) |
| Porcia to Compiegne | 513.48 mi (826.37 km) |
| Porcia to Concarneau | 789.81 mi (1,271.08 km) |
| Porcia to Conde-sur-l'Escaut | 517.72 mi (833.20 km) |
| Porcia to Conflans-Sainte-Honorine | 533.38 mi (858.40 km) |
| Porcia to Corbas | 371.93 mi (598.56 km) |
| Porcia to Corbeil-Essonnes | 508.47 mi (818.31 km) |
| Porcia to Cormeilles-en-Parisis | 528.39 mi (850.37 km) |
| Porcia to Cosne sur Loire | 469.71 mi (755.93 km) |
