| Onda to Cernavoda | 1,472.96 mi (2,370.50 km) |
| Onda to Chitila | 1,372.46 mi (2,208.77 km) |
| Onda to Cisnadie | 1,293.28 mi (2,081.33 km) |
| Onda to Cluj-Napoca | 1,280.57 mi (2,060.88 km) |
| Onda to Codlea | 1,354.83 mi (2,180.38 km) |
| Onda to Comanesti | 1,409.88 mi (2,268.98 km) |
| Onda to Comarnic | 1,360.22 mi (2,189.07 km) |
| Onda to Constanta | 1,502.32 mi (2,417.75 km) |
| Onda to Corabia | 1,296.10 mi (2,085.88 km) |
| Onda to Costesti | 1,319.35 mi (2,123.29 km) |
| Onda to Covasna | 1,391.64 mi (2,239.63 km) |
| Onda to Craiova | 1,264.99 mi (2,035.80 km) |
| Onda to Cristuru Secuiesc | 1,341.77 mi (2,159.37 km) |
| Onda to Cugir | 1,257.43 mi (2,023.64 km) |
| Onda to Cumpana | 1,498.41 mi (2,411.46 km) |
