| Boulder to Kidricevo | 5,447.84 mi (8,767.45 km) |
| Boulder to Kobarid | 5,384.19 mi (8,665.02 km) |
| Boulder to Kobilje | 5,452.44 mi (8,774.86 km) |
| Boulder to Kocevje | 5,456.63 mi (8,781.60 km) |
| Boulder to Komen | 5,411.54 mi (8,709.02 km) |
| Boulder to Komenda | 5,417.50 mi (8,718.63 km) |
| Boulder to Koper | 5,424.37 mi (8,729.68 km) |
| Boulder to Kostanjevica na Krki | 5,464.58 mi (8,794.40 km) |
| Boulder to Kostel | 5,465.13 mi (8,795.27 km) |
| Boulder to Kozje | 5,457.23 mi (8,782.56 km) |
| Boulder to Kranj | 5,410.59 mi (8,707.50 km) |
| Boulder to Kranjska Gora | 5,379.00 mi (8,656.66 km) |
| Boulder to Krizevci | 5,450.60 mi (8,771.90 km) |
| Boulder to Krsko | 5,461.15 mi (8,788.87 km) |
| Boulder to Kuzma | 5,434.90 mi (8,746.63 km) |
