| Onate to Cernavoda | 1,515.33 mi (2,438.68 km) |
| Onate to Chitila | 1,413.41 mi (2,274.66 km) |
| Onate to Cisnadie | 1,318.91 mi (2,122.57 km) |
| Onate to Cluj-Napoca | 1,292.10 mi (2,079.44 km) |
| Onate to Codlea | 1,381.30 mi (2,222.99 km) |
| Onate to Comanesti | 1,428.00 mi (2,298.15 km) |
| Onate to Comarnic | 1,392.20 mi (2,240.52 km) |
| Onate to Constanta | 1,546.32 mi (2,488.57 km) |
| Onate to Corabia | 1,346.35 mi (2,166.75 km) |
| Onate to Costesti | 1,358.38 mi (2,186.10 km) |
| Onate to Covasna | 1,416.56 mi (2,279.73 km) |
| Onate to Craiova | 1,308.25 mi (2,105.42 km) |
| Onate to Cristuru Secuiesc | 1,360.68 mi (2,189.80 km) |
| Onate to Cugir | 1,280.82 mi (2,061.27 km) |
| Onate to Cumpana | 1,543.04 mi (2,483.29 km) |
