| Opalenica to Cartagena | 1,318.12 mi (2,121.32 km) |
| Opalenica to Cartama | 1,484.74 mi (2,389.46 km) |
| Opalenica to Cartaya | 1,540.35 mi (2,478.95 km) |
| Opalenica to Caspe | 1,086.63 mi (1,748.76 km) |
| Opalenica to Cassa de la Selva | 957.97 mi (1,541.70 km) |
| Opalenica to Castalla | 1,251.85 mi (2,014.66 km) |
| Opalenica to Castellbisbal | 1,008.42 mi (1,622.89 km) |
| Opalenica to Castelldefels | 1,019.44 mi (1,640.64 km) |
| Opalenica to Castello de Ampurias | 931.42 mi (1,498.97 km) |
| Opalenica to Castellon de la Plana | 1,154.38 mi (1,857.79 km) |
| Opalenica to Castilleja de la Cuesta | 1,496.43 mi (2,408.27 km) |
| Opalenica to Catarroja | 1,198.32 mi (1,928.51 km) |
| Opalenica to Catral | 1,280.77 mi (2,061.20 km) |
| Opalenica to Caudete | 1,255.76 mi (2,020.95 km) |
| Opalenica to Cehegin | 1,315.75 mi (2,117.49 km) |
