| Seattle to Coudekerque-Branche | 4,875.13 mi (7,845.76 km) |
| Seattle to Coueron | 4,974.45 mi (8,005.61 km) |
| Seattle to Coulommiers | 5,017.23 mi (8,074.45 km) |
| Seattle to Courbevoic | 4,990.73 mi (8,031.81 km) |
| Seattle to Courcouronnes | 5,010.80 mi (8,064.10 km) |
| Seattle to Cournon-d'Auvergne | 5,194.53 mi (8,359.79 km) |
| Seattle to Courrieres | 4,921.12 mi (7,919.78 km) |
| Seattle to Coutras | 5,140.41 mi (8,272.69 km) |
| Seattle to Couzeix | 5,132.68 mi (8,260.25 km) |
| Seattle to Cran-Gevrier | 5,263.04 mi (8,470.04 km) |
| Seattle to Craponne | 5,235.66 mi (8,425.97 km) |
| Seattle to Creil | 4,976.55 mi (8,008.98 km) |
| Seattle to Crepy-en-Valois | 4,988.47 mi (8,028.17 km) |
| Seattle to Crest | 5,302.25 mi (8,533.15 km) |
| Seattle to Creteil | 5,002.28 mi (8,050.38 km) |
