| Opatija to Cartagena | 952.21 mi (1,532.43 km) |
| Opatija to Cartama | 1,148.40 mi (1,848.17 km) |
| Opatija to Cartaya | 1,239.20 mi (1,994.30 km) |
| Opatija to Caspe | 773.25 mi (1,244.42 km) |
| Opatija to Cassa de la Selva | 618.43 mi (995.26 km) |
| Opatija to Castalla | 896.85 mi (1,443.35 km) |
| Opatija to Castellbisbal | 672.38 mi (1,082.09 km) |
| Opatija to Castelldefels | 679.01 mi (1,092.76 km) |
| Opatija to Castello de Ampurias | 598.16 mi (962.64 km) |
| Opatija to Castellon de la Plana | 815.12 mi (1,311.81 km) |
| Opatija to Castilleja de la Cuesta | 1,185.09 mi (1,907.22 km) |
| Opatija to Catarroja | 853.34 mi (1,373.32 km) |
| Opatija to Catral | 920.74 mi (1,481.79 km) |
| Opatija to Caudete | 906.43 mi (1,458.76 km) |
| Opatija to Cehegin | 966.76 mi (1,555.85 km) |
