| Koper to Castelfidardo | 144.41 mi (232.40 km) |
| Koper to Castelfiorentino | 191.53 mi (308.24 km) |
| Koper to Castelfranco di Sopra | 170.78 mi (274.84 km) |
| Koper to Castelfranco di Sotto | 194.55 mi (313.10 km) |
| Koper to Castelfranco Emilia | 146.43 mi (235.66 km) |
| Koper to Castelfranco Veneto | 87.37 mi (140.61 km) |
| Koper to Castellabate | 369.38 mi (594.45 km) |
| Koper to Castellammare del Golfo | 521.67 mi (839.55 km) |
| Koper to Castellammare di Stabia | 337.57 mi (543.27 km) |
| Koper to Castellamonte | 291.93 mi (469.82 km) |
| Koper to Castellana Grotte | 365.77 mi (588.65 km) |
| Koper to Castellaneta | 376.05 mi (605.19 km) |
| Koper to Castellanza | 233.73 mi (376.15 km) |
| Koper to Castellarano | 159.19 mi (256.19 km) |
| Koper to Castelleone | 193.42 mi (311.28 km) |
