| Letchworth to Kongen | 480.12 mi (772.68 km) |
| Letchworth to Konigs Wusterhausen | 587.09 mi (944.83 km) |
| Letchworth to Konigsbach-Stein | 440.46 mi (708.86 km) |
| Letchworth to Konigsbrunn | 554.49 mi (892.37 km) |
| Letchworth to Konigslutter am Elm | 468.63 mi (754.19 km) |
| Letchworth to Konigstein im Taunus | 397.05 mi (638.98 km) |
| Letchworth to Konigswinter | 332.83 mi (535.63 km) |
| Letchworth to Konstanz | 513.95 mi (827.12 km) |
| Letchworth to Konz | 336.19 mi (541.04 km) |
| Letchworth to Korb | 474.16 mi (763.08 km) |
| Letchworth to Korbach | 392.82 mi (632.18 km) |
| Letchworth to Korntal-Munchingen | 465.22 mi (748.70 km) |
| Letchworth to Kornwestheim | 466.65 mi (751.01 km) |
| Letchworth to Korschenbroich | 294.72 mi (474.30 km) |
| Letchworth to Kosching | 560.09 mi (901.39 km) |
