| Smolyan to Cabries | 990.07 mi (1,593.36 km) |
| Smolyan to Cachan | 1,191.88 mi (1,918.14 km) |
| Smolyan to Caen | 1,317.13 mi (2,119.72 km) |
| Smolyan to Cagnes-sur-Mer | 902.05 mi (1,451.71 km) |
| Smolyan to Cahors | 1,187.42 mi (1,910.97 km) |
| Smolyan to Calais | 1,260.80 mi (2,029.07 km) |
| Smolyan to Caluire-et-Cuire | 1,030.59 mi (1,658.58 km) |
| Smolyan to Cambrai | 1,184.76 mi (1,906.68 km) |
| Smolyan to Canet-en-Roussillon | 1,110.95 mi (1,787.90 km) |
| Smolyan to Cannes | 908.47 mi (1,462.04 km) |
| Smolyan to Canteleu | 1,260.95 mi (2,029.31 km) |
| Smolyan to Capbreton | 1,330.83 mi (2,141.77 km) |
| Smolyan to Carcassonne | 1,142.51 mi (1,838.68 km) |
| Smolyan to Carmaux | 1,151.41 mi (1,853.02 km) |
| Smolyan to Carpentras | 1,007.95 mi (1,622.14 km) |
