| Piraeus to Chitila | 469.51 mi (755.60 km) |
| Piraeus to Cisnadie | 537.46 mi (864.97 km) |
| Piraeus to Cluj-Napoca | 609.67 mi (981.16 km) |
| Piraeus to Codlea | 543.63 mi (874.89 km) |
| Piraeus to Comanesti | 603.57 mi (971.35 km) |
| Piraeus to Comarnic | 515.24 mi (829.20 km) |
| Piraeus to Constanta | 502.17 mi (808.16 km) |
| Piraeus to Corabia | 405.33 mi (652.31 km) |
| Piraeus to Costesti | 469.14 mi (755.01 km) |
| Piraeus to Covasna | 561.57 mi (903.75 km) |
| Piraeus to Craiova | 441.62 mi (710.71 km) |
| Piraeus to Cristuru Secuiesc | 581.18 mi (935.33 km) |
| Piraeus to Cugir | 546.07 mi (878.82 km) |
| Piraeus to Cumpana | 496.96 mi (799.78 km) |
| Piraeus to Curtea de Arges | 500.05 mi (804.76 km) |
