| Olgiate Olona to Cervello | 453.66 mi (730.10 km) |
| Olgiate Olona to Cervera | 468.69 mi (754.28 km) |
| Olgiate Olona to Ceuti | 737.50 mi (1,186.89 km) |
| Olgiate Olona to Cheste | 645.63 mi (1,039.03 km) |
| Olgiate Olona to Chiclana de la Frontera | 1,006.84 mi (1,620.35 km) |
| Olgiate Olona to Chipiona | 1,003.32 mi (1,614.68 km) |
| Olgiate Olona to Chiva | 647.37 mi (1,041.85 km) |
| Olgiate Olona to Churriana de la Vega | 873.10 mi (1,405.12 km) |
| Olgiate Olona to Ciempozuelos | 735.97 mi (1,184.42 km) |
| Olgiate Olona to Cieza | 734.65 mi (1,182.31 km) |
| Olgiate Olona to Cisterniga | 731.91 mi (1,177.89 km) |
| Olgiate Olona to Ciudad de Melilla | 945.72 mi (1,521.98 km) |
| Olgiate Olona to Ciudad Real | 797.75 mi (1,283.85 km) |
| Olgiate Olona to Ciudad-Rodrigo | 850.32 mi (1,368.45 km) |
| Olgiate Olona to Cocentaina | 673.18 mi (1,083.38 km) |
