| Kirkwall to Karlovo | 1,634.46 mi (2,630.41 km) |
| Kirkwall to Karnobat | 1,702.27 mi (2,739.53 km) |
| Kirkwall to Kavarna | 1,702.25 mi (2,739.51 km) |
| Kirkwall to Kazanlak | 1,654.05 mi (2,661.94 km) |
| Kirkwall to Knezha | 1,565.23 mi (2,518.99 km) |
| Kirkwall to Kostinbrod | 1,577.01 mi (2,537.95 km) |
| Kirkwall to Kozloduy | 1,539.04 mi (2,476.85 km) |
| Kirkwall to Kyustendil | 1,591.39 mi (2,561.10 km) |
| Kirkwall to Levski | 1,604.75 mi (2,582.59 km) |
| Kirkwall to Lom | 1,521.68 mi (2,448.90 km) |
| Kirkwall to Lovech | 1,604.64 mi (2,582.41 km) |
| Kirkwall to Lukovit | 1,584.26 mi (2,549.62 km) |
| Kirkwall to Lyaskovets | 1,637.34 mi (2,635.05 km) |
| Kirkwall to Mezdra | 1,572.90 mi (2,531.35 km) |
| Kirkwall to Momchilgrad | 1,714.82 mi (2,759.73 km) |
