| Plonsk to Chitila | 616.53 mi (992.20 km) |
| Plonsk to Cisnadie | 507.36 mi (816.52 km) |
| Plonsk to Cluj-Napoca | 429.72 mi (691.56 km) |
| Plonsk to Codlea | 530.68 mi (854.05 km) |
| Plonsk to Comanesti | 507.27 mi (816.37 km) |
| Plonsk to Comarnic | 562.63 mi (905.47 km) |
| Plonsk to Constanta | 695.73 mi (1,119.67 km) |
| Plonsk to Corabia | 640.60 mi (1,030.95 km) |
| Plonsk to Costesti | 586.98 mi (944.65 km) |
| Plonsk to Covasna | 536.45 mi (863.33 km) |
| Plonsk to Craiova | 594.46 mi (956.69 km) |
| Plonsk to Cristuru Secuiesc | 485.17 mi (780.80 km) |
| Plonsk to Cugir | 487.90 mi (785.19 km) |
| Plonsk to Cumpana | 697.06 mi (1,121.81 km) |
| Plonsk to Curtea de Arges | 553.10 mi (890.13 km) |
