| Castel Bolognese to Kelkheim (Taunus) | 431.71 mi (694.77 km) |
| Castel Bolognese to Kelsterbach | 425.47 mi (684.74 km) |
| Castel Bolognese to Kemberg | 517.32 mi (832.54 km) |
| Castel Bolognese to Kempen | 546.89 mi (880.13 km) |
| Castel Bolognese to Kempten | 246.54 mi (396.77 km) |
| Castel Bolognese to Kenzingen | 329.72 mi (530.63 km) |
| Castel Bolognese to Kerpen | 511.26 mi (822.80 km) |
| Castel Bolognese to Ketsch | 381.40 mi (613.80 km) |
| Castel Bolognese to Kevelaer | 563.56 mi (906.96 km) |
| Castel Bolognese to Kiel | 695.37 mi (1,119.09 km) |
| Castel Bolognese to Kierspe | 510.21 mi (821.11 km) |
| Castel Bolognese to Kirchhain | 468.69 mi (754.29 km) |
| Castel Bolognese to Kirchheim bei Munchen | 266.70 mi (429.21 km) |
| Castel Bolognese to Kirchheim unter Teck | 319.43 mi (514.07 km) |
| Castel Bolognese to Kirchhundem | 499.35 mi (803.63 km) |
