| Smolyan to Calafell | 1,195.66 mi (1,924.22 km) |
| Smolyan to Calahorra | 1,365.77 mi (2,198.00 km) |
| Smolyan to Calasparra | 1,412.57 mi (2,273.30 km) |
| Smolyan to Calatayud | 1,358.17 mi (2,185.76 km) |
| Smolyan to Caldas de Montbuy | 1,160.73 mi (1,868.02 km) |
| Smolyan to Caldas de Reyes | 1,699.66 mi (2,735.33 km) |
| Smolyan to Calella | 1,135.43 mi (1,827.29 km) |
| Smolyan to Callosa de Segura | 1,372.48 mi (2,208.80 km) |
| Smolyan to Calpe | 1,313.93 mi (2,114.56 km) |
| Smolyan to Calvia | 1,169.81 mi (1,882.63 km) |
| Smolyan to Camas | 1,654.91 mi (2,663.33 km) |
| Smolyan to Cambados | 1,708.92 mi (2,750.24 km) |
| Smolyan to Cambre | 1,677.63 mi (2,699.89 km) |
| Smolyan to Cambrils | 1,223.48 mi (1,969.00 km) |
| Smolyan to Campo de Criptana | 1,463.03 mi (2,354.52 km) |
