| Sliven to Chitila | 127.31 mi (204.89 km) |
| Sliven to Cisnadie | 235.57 mi (379.11 km) |
| Sliven to Cluj-Napoca | 312.72 mi (503.27 km) |
| Sliven to Codlea | 212.83 mi (342.51 km) |
| Sliven to Comanesti | 258.91 mi (416.68 km) |
| Sliven to Comarnic | 180.78 mi (290.94 km) |
| Sliven to Constanta | 154.34 mi (248.39 km) |
| Sliven to Corabia | 119.00 mi (191.51 km) |
| Sliven to Costesti | 155.27 mi (249.88 km) |
| Sliven to Covasna | 218.86 mi (352.23 km) |
| Sliven to Craiova | 169.99 mi (273.57 km) |
| Sliven to Cristuru Secuiesc | 257.38 mi (414.22 km) |
| Sliven to Cugir | 263.15 mi (423.50 km) |
| Sliven to Cumpana | 149.00 mi (239.79 km) |
| Sliven to Curtea de Arges | 188.60 mi (303.51 km) |
