| Washougal to Cognac | 5,209.96 mi (8,384.62 km) |
| Washougal to Cogolin | 5,544.18 mi (8,922.50 km) |
| Washougal to Colmar | 5,288.24 mi (8,510.60 km) |
| Washougal to Colombes | 5,105.98 mi (8,217.28 km) |
| Washougal to Colomiers | 5,374.03 mi (8,648.67 km) |
| Washougal to Combs-la-Ville | 5,128.40 mi (8,253.37 km) |
| Washougal to Comines | 5,024.45 mi (8,086.07 km) |
| Washougal to Compiegne | 5,094.19 mi (8,198.30 km) |
| Washougal to Concarneau | 4,986.07 mi (8,024.30 km) |
| Washougal to Conde-sur-l'Escaut | 5,056.97 mi (8,138.41 km) |
| Washougal to Conflans-Sainte-Honorine | 5,097.61 mi (8,203.82 km) |
| Washougal to Corbas | 5,361.01 mi (8,627.71 km) |
| Washougal to Corbeil-Essonnes | 5,129.39 mi (8,254.95 km) |
| Washougal to Cormeilles-en-Parisis | 5,101.82 mi (8,210.58 km) |
| Washougal to Cosne sur Loire | 5,208.46 mi (8,382.21 km) |
