| Harlingen to Cartagena | 1,118.96 mi (1,800.79 km) |
| Harlingen to Cartama | 1,236.41 mi (1,989.81 km) |
| Harlingen to Cartaya | 1,252.78 mi (2,016.16 km) |
| Harlingen to Caspe | 863.26 mi (1,389.28 km) |
| Harlingen to Cassa de la Selva | 788.58 mi (1,269.10 km) |
| Harlingen to Castalla | 1,048.05 mi (1,686.67 km) |
| Harlingen to Castellbisbal | 823.87 mi (1,325.90 km) |
| Harlingen to Castelldefels | 837.31 mi (1,347.52 km) |
| Harlingen to Castello de Ampurias | 761.96 mi (1,226.25 km) |
| Harlingen to Castellon de la Plana | 946.85 mi (1,523.81 km) |
| Harlingen to Castilleja de la Cuesta | 1,221.92 mi (1,966.49 km) |
| Harlingen to Catarroja | 990.55 mi (1,594.13 km) |
| Harlingen to Catral | 1,079.12 mi (1,736.68 km) |
| Harlingen to Caudete | 1,045.12 mi (1,681.97 km) |
| Harlingen to Cehegin | 1,097.56 mi (1,766.36 km) |
