| Hardenberg to Chitila | 1,041.35 mi (1,675.89 km) |
| Hardenberg to Cisnadie | 919.71 mi (1,480.14 km) |
| Hardenberg to Cluj-Napoca | 855.16 mi (1,376.24 km) |
| Hardenberg to Codlea | 970.41 mi (1,561.73 km) |
| Hardenberg to Comanesti | 981.56 mi (1,579.66 km) |
| Hardenberg to Comarnic | 996.25 mi (1,603.31 km) |
| Hardenberg to Constanta | 1,158.62 mi (1,864.61 km) |
| Hardenberg to Corabia | 1,019.33 mi (1,640.45 km) |
| Hardenberg to Costesti | 992.42 mi (1,597.15 km) |
| Hardenberg to Covasna | 993.39 mi (1,598.71 km) |
| Hardenberg to Craiova | 968.07 mi (1,557.96 km) |
| Hardenberg to Cristuru Secuiesc | 930.67 mi (1,497.76 km) |
| Hardenberg to Cugir | 884.12 mi (1,422.86 km) |
| Hardenberg to Cumpana | 1,157.88 mi (1,863.42 km) |
| Hardenberg to Curtea de Arges | 964.30 mi (1,551.88 km) |
