| SeaTac to Cervignano del Friuli | 5,456.09 mi (8,780.73 km) |
| SeaTac to Cesa | 5,772.81 mi (9,290.44 km) |
| SeaTac to Cesano Maderno | 5,366.46 mi (8,636.48 km) |
| SeaTac to Cesena | 5,531.94 mi (8,902.79 km) |
| SeaTac to Cesenatico | 5,531.89 mi (8,902.71 km) |
| SeaTac to Cetraro | 5,904.44 mi (9,502.28 km) |
| SeaTac to Cherasco | 5,391.55 mi (8,676.86 km) |
| SeaTac to Chiampo | 5,423.92 mi (8,728.95 km) |
| SeaTac to Chiaravalle | 5,590.78 mi (8,997.48 km) |
| SeaTac to Chiari | 5,391.43 mi (8,676.66 km) |
| SeaTac to Chiavari | 5,448.91 mi (8,769.18 km) |
| SeaTac to Chieri | 5,369.06 mi (8,640.67 km) |
| SeaTac to Chieti | 5,686.79 mi (9,152.00 km) |
| SeaTac to Chioggia | 5,467.67 mi (8,799.37 km) |
| SeaTac to Chiusi | 5,592.31 mi (8,999.95 km) |
