| Sierpc to Chitila | 645.77 mi (1,039.27 km) |
| Sierpc to Cisnadie | 534.78 mi (860.65 km) |
| Sierpc to Cluj-Napoca | 457.08 mi (735.60 km) |
| Sierpc to Codlea | 560.22 mi (901.58 km) |
| Sierpc to Comanesti | 538.81 mi (867.14 km) |
| Sierpc to Comarnic | 592.03 mi (952.79 km) |
| Sierpc to Constanta | 727.53 mi (1,170.85 km) |
| Sierpc to Corabia | 667.10 mi (1,073.59 km) |
| Sierpc to Costesti | 614.75 mi (989.34 km) |
| Sierpc to Covasna | 567.12 mi (912.70 km) |
| Sierpc to Craiova | 620.16 mi (998.05 km) |
| Sierpc to Cristuru Secuiesc | 514.68 mi (828.30 km) |
| Sierpc to Cugir | 513.88 mi (827.01 km) |
| Sierpc to Cumpana | 728.76 mi (1,172.83 km) |
| Sierpc to Curtea de Arges | 580.94 mi (934.93 km) |
