| Keflavik to Karlovo | 2,362.13 mi (3,801.47 km) |
| Keflavik to Karnobat | 2,426.49 mi (3,905.06 km) |
| Keflavik to Kavarna | 2,421.64 mi (3,897.25 km) |
| Keflavik to Kazanlak | 2,380.96 mi (3,831.78 km) |
| Keflavik to Knezha | 2,292.72 mi (3,689.78 km) |
| Keflavik to Kostinbrod | 2,306.12 mi (3,711.35 km) |
| Keflavik to Kozloduy | 2,266.61 mi (3,647.76 km) |
| Keflavik to Kyustendil | 2,321.11 mi (3,735.47 km) |
| Keflavik to Levski | 2,330.91 mi (3,751.23 km) |
| Keflavik to Lom | 2,249.80 mi (3,620.70 km) |
| Keflavik to Lovech | 2,331.77 mi (3,752.63 km) |
| Keflavik to Lukovit | 2,312.03 mi (3,720.86 km) |
| Keflavik to Lyaskovets | 2,363.00 mi (3,802.87 km) |
| Keflavik to Mezdra | 2,301.27 mi (3,703.54 km) |
| Keflavik to Momchilgrad | 2,443.01 mi (3,931.65 km) |
