| SeaTac to Cassina de' Pecchi | 5,378.74 mi (8,656.24 km) |
| SeaTac to Cassino | 5,730.52 mi (9,222.38 km) |
| SeaTac to Castagneto Carducci | 5,549.49 mi (8,931.04 km) |
| SeaTac to Castano Primo | 5,361.69 mi (8,628.80 km) |
| SeaTac to Castel Bolognese | 5,510.43 mi (8,868.17 km) |
| SeaTac to Castel Gandolfo | 5,686.39 mi (9,151.35 km) |
| SeaTac to Castel Goffredo | 5,419.23 mi (8,721.40 km) |
| SeaTac to Castel Maggiore | 5,484.83 mi (8,826.98 km) |
| SeaTac to Castel Mella | 5,399.20 mi (8,689.17 km) |
| SeaTac to Castel San Giorgio | 5,795.38 mi (9,326.77 km) |
| SeaTac to Castel San Giovanni | 5,408.03 mi (8,703.38 km) |
| SeaTac to Castel San Pietro Terme | 5,500.13 mi (8,851.60 km) |
| SeaTac to Castel Volturno | 5,759.98 mi (9,269.79 km) |
| SeaTac to Castelbuono | 5,954.73 mi (9,583.21 km) |
| SeaTac to Casteldaccia | 5,933.11 mi (9,548.42 km) |
