| Friendly to Cognac | 3,798.41 mi (6,112.95 km) |
| Friendly to Cogolin | 4,175.99 mi (6,720.61 km) |
| Friendly to Colmar | 4,065.53 mi (6,542.84 km) |
| Friendly to Colombes | 3,827.94 mi (6,160.47 km) |
| Friendly to Colomiers | 3,930.33 mi (6,325.25 km) |
| Friendly to Combs-la-Ville | 3,847.42 mi (6,191.83 km) |
| Friendly to Comines | 3,813.62 mi (6,137.42 km) |
| Friendly to Compiegne | 3,839.50 mi (6,179.08 km) |
| Friendly to Concarneau | 3,586.80 mi (5,772.40 km) |
| Friendly to Conde-sur-l'Escaut | 3,845.20 mi (6,188.25 km) |
| Friendly to Conflans-Sainte-Honorine | 3,819.53 mi (6,146.94 km) |
| Friendly to Corbas | 4,030.69 mi (6,486.78 km) |
| Friendly to Corbeil-Essonnes | 3,845.55 mi (6,188.82 km) |
| Friendly to Cormeilles-en-Parisis | 3,824.52 mi (6,154.97 km) |
| Friendly to Cosne sur Loire | 3,896.07 mi (6,270.12 km) |
