| SeaTac to Corato | 5,813.31 mi (9,355.63 km) |
| SeaTac to Corbetta | 5,370.38 mi (8,642.80 km) |
| SeaTac to Corciano | 5,593.51 mi (9,001.89 km) |
| SeaTac to Cordenons | 5,431.61 mi (8,741.33 km) |
| SeaTac to Cori | 5,699.07 mi (9,171.76 km) |
| SeaTac to Coriano | 5,550.94 mi (8,933.37 km) |
| SeaTac to Corigliano Calabro | 5,911.83 mi (9,514.17 km) |
| SeaTac to Corleone | 5,941.29 mi (9,561.58 km) |
| SeaTac to Cormano | 5,371.76 mi (8,645.01 km) |
| SeaTac to Cornaredo | 5,371.36 mi (8,644.36 km) |
| SeaTac to Cornate d'Adda | 5,373.35 mi (8,647.57 km) |
| SeaTac to Cornedo Vicentino | 5,421.54 mi (8,725.12 km) |
| SeaTac to Correggio | 5,458.28 mi (8,784.25 km) |
| SeaTac to Corridonia | 5,616.42 mi (9,038.75 km) |
| SeaTac to Corsico | 5,377.39 mi (8,654.08 km) |
