| Letchworth to Kothen | 517.90 mi (833.48 km) |
| Letchworth to Kranenburg | 266.24 mi (428.48 km) |
| Letchworth to Krefeld | 294.61 mi (474.13 km) |
| Letchworth to Kressbronn am Bodensee | 532.17 mi (856.44 km) |
| Letchworth to Kreuzau | 302.03 mi (486.07 km) |
| Letchworth to Kreuztal | 359.41 mi (578.42 km) |
| Letchworth to Kriftel | 399.65 mi (643.17 km) |
| Letchworth to Kronach | 514.94 mi (828.71 km) |
| Letchworth to Kronberg | 398.42 mi (641.19 km) |
| Letchworth to Kronshagen | 456.71 mi (735.00 km) |
| Letchworth to Krumbach | 534.79 mi (860.66 km) |
| Letchworth to Kulmbach | 522.43 mi (840.77 km) |
| Letchworth to Kummersbruck | 558.10 mi (898.18 km) |
| Letchworth to Kunzell | 440.83 mi (709.44 km) |
| Letchworth to Kunzelsau | 472.18 mi (759.91 km) |
