| Smolyan to Castelfiorentino | 711.44 mi (1,144.96 km) |
| Smolyan to Castelfranco di Sopra | 682.27 mi (1,098.00 km) |
| Smolyan to Castelfranco di Sotto | 723.01 mi (1,163.57 km) |
| Smolyan to Castelfranco Emilia | 718.39 mi (1,156.13 km) |
| Smolyan to Castelfranco Veneto | 697.04 mi (1,121.78 km) |
| Smolyan to Castellabate | 516.43 mi (831.11 km) |
| Smolyan to Castellammare del Golfo | 673.07 mi (1,083.20 km) |
| Smolyan to Castellammare di Stabia | 535.00 mi (860.99 km) |
| Smolyan to Castellamonte | 889.21 mi (1,431.04 km) |
| Smolyan to Castellana Grotte | 394.28 mi (634.53 km) |
| Smolyan to Castellaneta | 409.48 mi (658.99 km) |
| Smolyan to Castellanza | 836.54 mi (1,346.28 km) |
| Smolyan to Castellarano | 730.95 mi (1,176.35 km) |
| Smolyan to Castelleone | 790.74 mi (1,272.58 km) |
| Smolyan to Castelletto sopra Ticino | 850.70 mi (1,369.06 km) |
