| Opfikon to Cadiz | 1,068.78 mi (1,720.04 km) |
| Opfikon to Calafell | 551.90 mi (888.20 km) |
| Opfikon to Calahorra | 625.13 mi (1,006.05 km) |
| Opfikon to Calasparra | 820.06 mi (1,319.76 km) |
| Opfikon to Calatayud | 655.00 mi (1,054.12 km) |
| Opfikon to Caldas de Montbuy | 509.49 mi (819.94 km) |
| Opfikon to Caldas de Reyes | 901.76 mi (1,451.25 km) |
| Opfikon to Calella | 495.70 mi (797.76 km) |
| Opfikon to Callosa de Segura | 800.82 mi (1,288.79 km) |
| Opfikon to Calpe | 743.28 mi (1,196.19 km) |
| Opfikon to Calvia | 622.26 mi (1,001.43 km) |
| Opfikon to Camas | 1,014.22 mi (1,632.22 km) |
| Opfikon to Cambados | 912.35 mi (1,468.29 km) |
| Opfikon to Cambre | 867.03 mi (1,395.35 km) |
| Opfikon to Cambrils | 575.33 mi (925.90 km) |
