| Boulder to Kothen | 5,059.51 mi (8,142.49 km) |
| Boulder to Kranenburg | 4,872.03 mi (7,840.77 km) |
| Boulder to Krefeld | 4,910.86 mi (7,903.27 km) |
| Boulder to Kressbronn am Bodensee | 5,185.97 mi (8,346.01 km) |
| Boulder to Kreuzau | 4,935.13 mi (7,942.33 km) |
| Boulder to Kreuztal | 4,972.99 mi (8,003.25 km) |
| Boulder to Kriftel | 5,030.45 mi (8,095.73 km) |
| Boulder to Kronach | 5,114.50 mi (8,230.98 km) |
| Boulder to Kronberg | 5,026.82 mi (8,089.88 km) |
| Boulder to Kronshagen | 4,881.10 mi (7,855.37 km) |
| Boulder to Krumbach | 5,179.92 mi (8,336.28 km) |
| Boulder to Kulmbach | 5,124.66 mi (8,247.34 km) |
| Boulder to Kummersbruck | 5,172.20 mi (8,323.86 km) |
| Boulder to Kunzell | 5,048.63 mi (8,124.99 km) |
| Boulder to Kunzelsau | 5,107.92 mi (8,220.40 km) |
