| Nairn to Karlovo | 1,616.10 mi (2,600.86 km) |
| Nairn to Karnobat | 1,689.23 mi (2,718.55 km) |
| Nairn to Kavarna | 1,694.62 mi (2,727.22 km) |
| Nairn to Kazanlak | 1,637.10 mi (2,634.66 km) |
| Nairn to Knezha | 1,547.44 mi (2,490.36 km) |
| Nairn to Kostinbrod | 1,555.04 mi (2,502.60 km) |
| Nairn to Kozloduy | 1,521.18 mi (2,448.10 km) |
| Nairn to Kyustendil | 1,566.58 mi (2,521.17 km) |
| Nairn to Levski | 1,589.23 mi (2,557.62 km) |
| Nairn to Lom | 1,502.65 mi (2,418.28 km) |
| Nairn to Lovech | 1,587.41 mi (2,554.69 km) |
| Nairn to Lukovit | 1,565.82 mi (2,519.94 km) |
| Nairn to Lyaskovets | 1,622.52 mi (2,611.19 km) |
| Nairn to Mezdra | 1,553.12 mi (2,499.51 km) |
| Nairn to Momchilgrad | 1,695.05 mi (2,727.93 km) |
