| Smolyan to Corbetta | 833.33 mi (1,341.12 km) |
| Smolyan to Corciano | 642.31 mi (1,033.70 km) |
| Smolyan to Cordenons | 670.41 mi (1,078.92 km) |
| Smolyan to Cori | 608.43 mi (979.18 km) |
| Smolyan to Coriano | 634.72 mi (1,021.48 km) |
| Smolyan to Corigliano Calabro | 450.48 mi (724.98 km) |
| Smolyan to Corleone | 658.86 mi (1,060.33 km) |
| Smolyan to Cormano | 822.91 mi (1,324.35 km) |
| Smolyan to Cornaredo | 828.37 mi (1,333.13 km) |
| Smolyan to Cornate d'Adda | 810.58 mi (1,304.51 km) |
| Smolyan to Cornedo Vicentino | 722.64 mi (1,162.97 km) |
| Smolyan to Correggio | 733.94 mi (1,181.15 km) |
| Smolyan to Corridonia | 581.48 mi (935.80 km) |
| Smolyan to Corsico | 823.37 mi (1,325.08 km) |
| Smolyan to Cortona | 658.07 mi (1,059.06 km) |
