| Opfikon to Cocentaina | 751.86 mi (1,210.00 km) |
| Opfikon to Coin | 1,007.23 mi (1,620.97 km) |
| Opfikon to Colindres | 645.11 mi (1,038.21 km) |
| Opfikon to Collado-Villalba | 780.02 mi (1,255.32 km) |
| Opfikon to Colmenar Viejo | 769.31 mi (1,238.08 km) |
| Opfikon to Colmenarejo | 783.66 mi (1,261.19 km) |
| Opfikon to Conil de la Frontera | 1,075.29 mi (1,730.51 km) |
| Opfikon to Consuegra | 820.56 mi (1,320.57 km) |
| Opfikon to Corbera de Llobregat | 528.73 mi (850.91 km) |
| Opfikon to Cordoba | 943.62 mi (1,518.61 km) |
| Opfikon to Coria del Rio | 1,020.92 mi (1,643.00 km) |
| Opfikon to Crevillente | 791.43 mi (1,273.69 km) |
| Opfikon to Cuarte de Huerva | 617.04 mi (993.04 km) |
| Opfikon to Cubellas | 548.16 mi (882.18 km) |
| Opfikon to Cuellar | 758.61 mi (1,220.87 km) |
