| Opatija to Calafell | 700.24 mi (1,126.93 km) |
| Opatija to Calahorra | 836.00 mi (1,345.42 km) |
| Opatija to Calasparra | 956.80 mi (1,539.82 km) |
| Opatija to Calatayud | 844.91 mi (1,359.76 km) |
| Opatija to Caldas de Montbuy | 658.93 mi (1,060.45 km) |
| Opatija to Caldas de Reyes | 1,152.13 mi (1,854.17 km) |
| Opatija to Calella | 636.64 mi (1,024.57 km) |
| Opatija to Callosa de Segura | 925.52 mi (1,489.47 km) |
| Opatija to Calpe | 863.83 mi (1,390.20 km) |
| Opatija to Calvia | 720.22 mi (1,159.09 km) |
| Opatija to Camas | 1,183.60 mi (1,904.83 km) |
| Opatija to Cambados | 1,162.11 mi (1,870.23 km) |
| Opatija to Cambre | 1,124.19 mi (1,809.21 km) |
| Opatija to Cambrils | 728.11 mi (1,171.79 km) |
| Opatija to Campo de Criptana | 976.39 mi (1,571.35 km) |
