| Smolyan to Chitila | 212.20 mi (341.51 km) |
| Smolyan to Cisnadie | 286.64 mi (461.30 km) |
| Smolyan to Cluj-Napoca | 362.38 mi (583.19 km) |
| Smolyan to Codlea | 286.64 mi (461.31 km) |
| Smolyan to Comanesti | 345.94 mi (556.73 km) |
| Smolyan to Comarnic | 257.73 mi (414.77 km) |
| Smolyan to Constanta | 267.38 mi (430.31 km) |
| Smolyan to Corabia | 151.66 mi (244.08 km) |
| Smolyan to Costesti | 213.44 mi (343.50 km) |
| Smolyan to Covasna | 303.92 mi (489.11 km) |
| Smolyan to Craiova | 195.18 mi (314.12 km) |
| Smolyan to Cristuru Secuiesc | 325.75 mi (524.24 km) |
| Smolyan to Cugir | 301.82 mi (485.73 km) |
| Smolyan to Cumpana | 262.04 mi (421.72 km) |
| Smolyan to Curtea de Arges | 245.69 mi (395.40 km) |
