| Boulder to Kirchlengern | 4,936.76 mi (7,944.95 km) |
| Boulder to Kirchlinteln | 4,923.28 mi (7,923.25 km) |
| Boulder to Kirchseeon | 5,238.18 mi (8,430.04 km) |
| Boulder to Kirchzarten | 5,112.75 mi (8,228.17 km) |
| Boulder to Kirkel | 5,027.11 mi (8,090.35 km) |
| Boulder to Kissing | 5,197.70 mi (8,364.90 km) |
| Boulder to Kisslegg | 5,186.13 mi (8,346.27 km) |
| Boulder to Kitzingen | 5,102.03 mi (8,210.92 km) |
| Boulder to Kleinblittersdorf | 5,026.37 mi (8,089.17 km) |
| Boulder to Kleve | 4,876.31 mi (7,847.66 km) |
| Boulder to Klipphausen | 5,141.26 mi (8,274.06 km) |
| Boulder to Klotze | 4,994.33 mi (8,037.60 km) |
| Boulder to Koblenz | 4,989.20 mi (8,029.35 km) |
| Boulder to Kolbermoor | 5,255.03 mi (8,457.15 km) |
| Boulder to Kolkwitz | 5,129.47 mi (8,255.08 km) |
