| SeaTac to Chivasso | 5,360.35 mi (8,626.65 km) |
| SeaTac to Ciampino | 5,681.88 mi (9,144.10 km) |
| SeaTac to Cicciano | 5,780.12 mi (9,302.20 km) |
| SeaTac to Cingoli | 5,602.12 mi (9,015.74 km) |
| SeaTac to Cinisello Balsamo | 5,373.01 mi (8,647.02 km) |
| SeaTac to Cinisi | 5,914.84 mi (9,519.01 km) |
| SeaTac to Cirie | 5,350.35 mi (8,610.56 km) |
| SeaTac to Ciro Marina | 5,940.57 mi (9,560.42 km) |
| SeaTac to Cislago | 5,360.83 mi (8,627.42 km) |
| SeaTac to Cisterna di Latina | 5,700.22 mi (9,173.62 km) |
| SeaTac to Cisternino | 5,863.05 mi (9,435.67 km) |
| SeaTac to Citta di Castello | 5,572.80 mi (8,968.55 km) |
| SeaTac to Citta Sant'Angelo | 5,673.83 mi (9,131.14 km) |
| SeaTac to Cittadella | 5,429.96 mi (8,738.67 km) |
| SeaTac to Cittanova | 5,978.59 mi (9,621.61 km) |
