| SeaTac to Casamassima | 5,837.70 mi (9,394.86 km) |
| SeaTac to Casandrino | 5,775.26 mi (9,294.38 km) |
| SeaTac to Casapulla | 5,767.92 mi (9,282.58 km) |
| SeaTac to Casarano | 5,924.43 mi (9,534.45 km) |
| SeaTac to Casatenovo | 5,366.62 mi (8,636.74 km) |
| SeaTac to Casciana Terme | 5,528.39 mi (8,897.08 km) |
| SeaTac to Cascina | 5,517.38 mi (8,879.37 km) |
| SeaTac to Caselle Torinese | 5,354.93 mi (8,617.92 km) |
| SeaTac to Caserta | 5,769.14 mi (9,284.54 km) |
| SeaTac to Casier | 5,442.27 mi (8,758.48 km) |
| SeaTac to Casorate Primo | 5,381.76 mi (8,661.10 km) |
| SeaTac to Casoria | 5,778.51 mi (9,299.62 km) |
| SeaTac to Cassano al Ionio | 5,895.74 mi (9,488.28 km) |
| SeaTac to Cassano d'Adda | 5,381.50 mi (8,660.69 km) |
| SeaTac to Cassano delle Murge | 5,838.34 mi (9,395.91 km) |
