| Barrhead to Karlovo | 1,581.87 mi (2,545.77 km) |
| Barrhead to Karnobat | 1,661.09 mi (2,673.26 km) |
| Barrhead to Kavarna | 1,673.04 mi (2,692.50 km) |
| Barrhead to Kazanlak | 1,604.47 mi (2,582.15 km) |
| Barrhead to Knezha | 1,514.29 mi (2,437.01 km) |
| Barrhead to Kostinbrod | 1,516.76 mi (2,440.99 km) |
| Barrhead to Kozloduy | 1,488.10 mi (2,394.87 km) |
| Barrhead to Kyustendil | 1,524.78 mi (2,453.89 km) |
| Barrhead to Levski | 1,558.61 mi (2,508.34 km) |
| Barrhead to Lom | 1,468.27 mi (2,362.95 km) |
| Barrhead to Lovech | 1,554.72 mi (2,502.09 km) |
| Barrhead to Lukovit | 1,531.78 mi (2,465.16 km) |
| Barrhead to Lyaskovets | 1,592.55 mi (2,562.97 km) |
| Barrhead to Mezdra | 1,517.52 mi (2,442.21 km) |
| Barrhead to Momchilgrad | 1,658.72 mi (2,669.44 km) |
