| Constanta to Kobarid | 745.64 mi (1,199.99 km) |
| Constanta to Kobilje | 617.67 mi (994.04 km) |
| Constanta to Kocevje | 680.86 mi (1,095.73 km) |
| Constanta to Komen | 734.98 mi (1,182.84 km) |
| Constanta to Komenda | 699.68 mi (1,126.02 km) |
| Constanta to Koper | 734.90 mi (1,182.71 km) |
| Constanta to Kostanjevica na Krki | 654.80 mi (1,053.80 km) |
| Constanta to Kostel | 677.88 mi (1,090.94 km) |
| Constanta to Kozje | 650.10 mi (1,046.24 km) |
| Constanta to Kranj | 708.07 mi (1,139.52 km) |
| Constanta to Kranjska Gora | 737.58 mi (1,187.02 km) |
| Constanta to Krizevci | 627.92 mi (1,010.53 km) |
| Constanta to Krsko | 652.73 mi (1,050.47 km) |
| Constanta to Kuzma | 634.28 mi (1,020.77 km) |
| Constanta to Lasko | 666.03 mi (1,071.87 km) |
