| Harpenden to Karahalli | 1,711.98 mi (2,755.16 km) |
| Harpenden to Karakocan | 2,117.49 mi (3,407.77 km) |
| Harpenden to Karakopru | 2,142.90 mi (3,448.67 km) |
| Harpenden to Karaman | 1,913.79 mi (3,079.94 km) |
| Harpenden to Karapinar | 1,902.57 mi (3,061.89 km) |
| Harpenden to Karatas | 2,030.69 mi (3,268.08 km) |
| Harpenden to Karatepe | 1,621.52 mi (2,609.59 km) |
| Harpenden to Karayilan | 2,058.43 mi (3,312.73 km) |
| Harpenden to Kargipinar | 1,986.56 mi (3,197.06 km) |
| Harpenden to Karkamis | 2,125.91 mi (3,421.32 km) |
| Harpenden to Karliova | 2,144.16 mi (3,450.69 km) |
| Harpenden to Kars | 2,178.78 mi (3,506.40 km) |
| Harpenden to Kartal | 1,583.10 mi (2,547.75 km) |
| Harpenden to Kas | 1,818.78 mi (2,927.05 km) |
| Harpenden to Kastamonu | 1,752.95 mi (2,821.09 km) |
