| SeaTac to Carmona | 5,392.21 mi (8,677.92 km) |
| SeaTac to Cartagena | 5,538.35 mi (8,913.12 km) |
| SeaTac to Cartama | 5,467.33 mi (8,798.81 km) |
| SeaTac to Cartaya | 5,350.28 mi (8,610.44 km) |
| SeaTac to Caspe | 5,364.56 mi (8,633.43 km) |
| SeaTac to Cassa de la Selva | 5,413.92 mi (8,712.87 km) |
| SeaTac to Castalla | 5,492.47 mi (8,839.27 km) |
| SeaTac to Castellbisbal | 5,411.27 mi (8,708.60 km) |
| SeaTac to Castelldefels | 5,422.27 mi (8,726.30 km) |
| SeaTac to Castello de Ampurias | 5,398.67 mi (8,688.32 km) |
| SeaTac to Castellon de la Plana | 5,434.67 mi (8,746.26 km) |
| SeaTac to Castilleja de la Cuesta | 5,382.58 mi (8,662.42 km) |
| SeaTac to Catarroja | 5,455.68 mi (8,780.07 km) |
| SeaTac to Catral | 5,512.69 mi (8,871.82 km) |
| SeaTac to Caudete | 5,476.39 mi (8,813.40 km) |
