| SeaTac to Carmignano | 5,521.09 mi (8,885.34 km) |
| SeaTac to Carovigno | 5,870.47 mi (9,447.61 km) |
| SeaTac to Carpenedolo | 5,414.17 mi (8,713.26 km) |
| SeaTac to Carpi | 5,459.99 mi (8,787.01 km) |
| SeaTac to Carrara | 5,482.45 mi (8,823.15 km) |
| SeaTac to Carugate | 5,375.93 mi (8,651.72 km) |
| SeaTac to Casal di Principe | 5,767.31 mi (9,281.59 km) |
| SeaTac to Casale Monferrato | 5,378.34 mi (8,655.60 km) |
| SeaTac to Casale sul Sile | 5,446.07 mi (8,764.60 km) |
| SeaTac to Casalecchio di Reno | 5,487.78 mi (8,831.73 km) |
| SeaTac to Casalgrande | 5,468.23 mi (8,800.27 km) |
| SeaTac to Casalmaggiore | 5,436.34 mi (8,748.94 km) |
| SeaTac to Casalnuovo di Napoli | 5,778.71 mi (9,299.94 km) |
| SeaTac to Casalpusterlengo | 5,405.89 mi (8,699.94 km) |
| SeaTac to Casaluce | 5,769.96 mi (9,285.86 km) |
