| Porto to Cognac | 520.38 mi (837.47 km) |
| Porto to Cogolin | 787.64 mi (1,267.59 km) |
| Porto to Colmar | 917.08 mi (1,475.90 km) |
| Porto to Colombes | 753.17 mi (1,212.10 km) |
| Porto to Colomiers | 535.30 mi (861.48 km) |
| Porto to Combs-la-Ville | 752.49 mi (1,211.02 km) |
| Porto to Comines | 865.01 mi (1,392.10 km) |
| Porto to Compiegne | 794.96 mi (1,279.37 km) |
| Porto to Concarneau | 518.24 mi (834.03 km) |
| Porto to Conde-sur-l'Escaut | 868.28 mi (1,397.36 km) |
| Porto to Conflans-Sainte-Honorine | 751.43 mi (1,209.31 km) |
| Porto to Corbas | 745.48 mi (1,199.74 km) |
| Porto to Corbeil-Essonnes | 747.28 mi (1,202.63 km) |
| Porto to Cormeilles-en-Parisis | 753.74 mi (1,213.03 km) |
| Porto to Cosne sur Loire | 714.68 mi (1,150.17 km) |
