| Onate to Cocentaina | 313.73 mi (504.90 km) |
| Onate to Coin | 456.92 mi (735.33 km) |
| Onate to Colindres | 57.70 mi (92.85 km) |
| Onate to Collado-Villalba | 184.95 mi (297.65 km) |
| Onate to Colmenar Viejo | 178.14 mi (286.69 km) |
| Onate to Colmenarejo | 189.67 mi (305.24 km) |
| Onate to Conil de la Frontera | 506.45 mi (815.05 km) |
| Onate to Consuegra | 254.37 mi (409.37 km) |
| Onate to Corbera de Llobregat | 248.88 mi (400.54 km) |
| Onate to Cordoba | 376.77 mi (606.35 km) |
| Onate to Coria del Rio | 441.07 mi (709.84 km) |
| Onate to Crevillente | 341.15 mi (549.03 km) |
| Onate to Cuarte de Huerva | 126.14 mi (203.00 km) |
| Onate to Cubellas | 244.52 mi (393.52 km) |
| Onate to Cuellar | 148.80 mi (239.46 km) |
