| Belfast to Carmona | 1,183.63 mi (1,904.87 km) |
| Belfast to Cartagena | 1,197.29 mi (1,926.85 km) |
| Belfast to Cartama | 1,237.27 mi (1,991.20 km) |
| Belfast to Cartaya | 1,197.61 mi (1,927.36 km) |
| Belfast to Caspe | 961.99 mi (1,548.18 km) |
| Belfast to Cassa de la Selva | 965.18 mi (1,553.30 km) |
| Belfast to Castalla | 1,132.53 mi (1,822.62 km) |
| Belfast to Castellbisbal | 975.94 mi (1,570.62 km) |
| Belfast to Castelldefels | 988.70 mi (1,591.16 km) |
| Belfast to Castello de Ampurias | 945.41 mi (1,521.49 km) |
| Belfast to Castellon de la Plana | 1,045.90 mi (1,683.22 km) |
| Belfast to Castilleja de la Cuesta | 1,189.32 mi (1,914.03 km) |
| Belfast to Catarroja | 1,080.75 mi (1,739.30 km) |
| Belfast to Catral | 1,160.89 mi (1,868.28 km) |
| Belfast to Caudete | 1,122.07 mi (1,805.80 km) |
