| Harpenden to Kucukcekmece | 1,562.31 mi (2,514.30 km) |
| Harpenden to Kucukkuyu | 1,539.51 mi (2,477.61 km) |
| Harpenden to Kulp | 2,178.06 mi (3,505.24 km) |
| Harpenden to Kulu | 1,821.20 mi (2,930.93 km) |
| Harpenden to Kumcati | 2,278.14 mi (3,666.31 km) |
| Harpenden to Kursunlu | 1,753.23 mi (2,821.55 km) |
| Harpenden to Kurtalan | 2,232.13 mi (3,592.26 km) |
| Harpenden to Kusadasi | 1,645.13 mi (2,647.58 km) |
| Harpenden to Kutahya | 1,680.14 mi (2,703.92 km) |
| Harpenden to Kuzuculu | 2,050.73 mi (3,300.33 km) |
| Harpenden to Lapseki | 1,505.77 mi (2,423.30 km) |
| Harpenden to Lice | 2,165.02 mi (3,484.26 km) |
| Harpenden to Luleburgaz | 1,486.12 mi (2,391.67 km) |
| Harpenden to Macka | 2,022.29 mi (3,254.56 km) |
| Harpenden to Malatya | 2,071.43 mi (3,333.64 km) |
