| Seattle to Cognac | 5,098.22 mi (8,204.80 km) |
| Seattle to Cogolin | 5,428.57 mi (8,736.44 km) |
| Seattle to Colmar | 5,168.33 mi (8,317.63 km) |
| Seattle to Colombes | 4,989.26 mi (8,029.44 km) |
| Seattle to Colomiers | 5,262.74 mi (8,469.56 km) |
| Seattle to Combs-la-Ville | 5,011.66 mi (8,065.49 km) |
| Seattle to Comines | 4,905.64 mi (7,894.86 km) |
| Seattle to Compiegne | 4,976.62 mi (8,009.10 km) |
| Seattle to Concarneau | 4,875.23 mi (7,845.93 km) |
| Seattle to Conde-sur-l'Escaut | 4,938.00 mi (7,946.94 km) |
| Seattle to Conflans-Sainte-Honorine | 4,980.94 mi (8,016.05 km) |
| Seattle to Corbas | 5,244.87 mi (8,440.80 km) |
| Seattle to Corbeil-Essonnes | 5,012.75 mi (8,067.25 km) |
| Seattle to Cormeilles-en-Parisis | 4,985.09 mi (8,022.73 km) |
| Seattle to Cosne sur Loire | 5,092.50 mi (8,195.58 km) |
