| SeaTac to Coudekerque-Branche | 4,884.68 mi (7,861.13 km) |
| SeaTac to Coueron | 4,983.34 mi (8,019.92 km) |
| SeaTac to Coulommiers | 5,026.65 mi (8,089.61 km) |
| SeaTac to Courbevoic | 5,000.09 mi (8,046.87 km) |
| SeaTac to Courcouronnes | 5,020.15 mi (8,079.15 km) |
| SeaTac to Cournon-d'Auvergne | 5,203.71 mi (8,374.56 km) |
| SeaTac to Courrieres | 4,930.67 mi (7,935.15 km) |
| SeaTac to Coutras | 5,149.24 mi (8,286.89 km) |
| SeaTac to Couzeix | 5,141.70 mi (8,274.77 km) |
| SeaTac to Cran-Gevrier | 5,272.47 mi (8,485.21 km) |
| SeaTac to Craponne | 5,244.96 mi (8,440.94 km) |
| SeaTac to Creil | 4,985.96 mi (8,024.13 km) |
| SeaTac to Crepy-en-Valois | 4,997.91 mi (8,043.36 km) |
| SeaTac to Crest | 5,311.50 mi (8,548.03 km) |
| SeaTac to Creteil | 5,011.65 mi (8,065.46 km) |
