| Portimao to Cognac | 727.58 mi (1,170.93 km) |
| Portimao to Cogolin | 898.65 mi (1,446.25 km) |
| Portimao to Colmar | 1,102.78 mi (1,774.76 km) |
| Portimao to Colombes | 977.77 mi (1,573.57 km) |
| Portimao to Colomiers | 685.02 mi (1,102.44 km) |
| Portimao to Combs-la-Ville | 972.73 mi (1,565.45 km) |
| Portimao to Comines | 1,099.80 mi (1,769.95 km) |
| Portimao to Compiegne | 1,020.40 mi (1,642.17 km) |
| Portimao to Concarneau | 777.99 mi (1,252.06 km) |
| Portimao to Conde-sur-l'Escaut | 1,097.76 mi (1,766.68 km) |
| Portimao to Conflans-Sainte-Honorine | 977.69 mi (1,573.44 km) |
| Portimao to Corbas | 910.31 mi (1,465.00 km) |
| Portimao to Corbeil-Essonnes | 967.47 mi (1,557.00 km) |
| Portimao to Cormeilles-en-Parisis | 979.12 mi (1,575.75 km) |
| Portimao to Cosne sur Loire | 918.47 mi (1,478.14 km) |
