| Karlovo to Isselburg | 1,064.33 mi (1,712.88 km) |
| Karlovo to Issum | 1,056.13 mi (1,699.68 km) |
| Karlovo to Itzehoe | 1,045.25 mi (1,682.17 km) |
| Karlovo to Jena | 845.52 mi (1,360.73 km) |
| Karlovo to Jever | 1,080.54 mi (1,738.96 km) |
| Karlovo to Jork | 1,022.27 mi (1,645.18 km) |
| Karlovo to Juchen | 1,039.08 mi (1,672.23 km) |
| Karlovo to Julich | 1,039.10 mi (1,672.28 km) |
| Karlovo to Juterbog | 846.06 mi (1,361.60 km) |
| Karlovo to Kaarst | 1,038.32 mi (1,671.02 km) |
| Karlovo to Kaiserslautern | 939.49 mi (1,511.96 km) |
| Karlovo to Kalkar | 1,067.68 mi (1,718.26 km) |
| Karlovo to Kall | 1,020.38 mi (1,642.14 km) |
| Karlovo to Kaltenkirchen | 1,027.92 mi (1,654.28 km) |
| Karlovo to Kamen | 1,011.59 mi (1,627.99 km) |
