| Onex to Cehegin | 689.37 mi (1,109.43 km) |
| Onex to Cervello | 389.82 mi (627.35 km) |
| Onex to Cervera | 393.76 mi (633.70 km) |
| Onex to Ceuti | 674.79 mi (1,085.97 km) |
| Onex to Cheste | 576.33 mi (927.52 km) |
| Onex to Chiclana de la Frontera | 925.08 mi (1,488.76 km) |
| Onex to Chipiona | 918.46 mi (1,478.12 km) |
| Onex to Chiva | 577.87 mi (929.99 km) |
| Onex to Churriana de la Vega | 800.47 mi (1,288.24 km) |
| Onex to Ciempozuelos | 641.86 mi (1,032.98 km) |
| Onex to Cieza | 669.64 mi (1,077.68 km) |
| Onex to Cisterniga | 621.91 mi (1,000.87 km) |
| Onex to Ciudad de Melilla | 888.41 mi (1,429.75 km) |
| Onex to Ciudad Real | 711.08 mi (1,144.38 km) |
| Onex to Ciudad-Rodrigo | 741.46 mi (1,193.27 km) |
