| Opfikon to Carmona | 996.20 mi (1,603.23 km) |
| Opfikon to Cartagena | 834.13 mi (1,342.41 km) |
| Opfikon to Cartama | 1,000.71 mi (1,610.48 km) |
| Opfikon to Cartaya | 1,062.07 mi (1,709.23 km) |
| Opfikon to Caspe | 602.75 mi (970.03 km) |
| Opfikon to Cassa de la Selva | 474.05 mi (762.90 km) |
| Opfikon to Castalla | 767.32 mi (1,234.87 km) |
| Opfikon to Castellbisbal | 523.84 mi (843.04 km) |
| Opfikon to Castelldefels | 535.06 mi (861.10 km) |
| Opfikon to Castello de Ampurias | 447.23 mi (719.74 km) |
| Opfikon to Castellon de la Plana | 669.57 mi (1,077.57 km) |
| Opfikon to Castilleja de la Cuesta | 1,015.79 mi (1,634.76 km) |
| Opfikon to Catarroja | 713.55 mi (1,148.34 km) |
| Opfikon to Catral | 796.45 mi (1,281.77 km) |
| Opfikon to Caudete | 771.01 mi (1,240.81 km) |
