| Greenock to Karlovo | 1,599.28 mi (2,573.79 km) |
| Greenock to Karnobat | 1,678.29 mi (2,700.95 km) |
| Greenock to Kavarna | 1,689.97 mi (2,719.74 km) |
| Greenock to Kazanlak | 1,621.84 mi (2,610.09 km) |
| Greenock to Knezha | 1,531.66 mi (2,464.97 km) |
| Greenock to Kostinbrod | 1,534.29 mi (2,469.21 km) |
| Greenock to Kozloduy | 1,505.47 mi (2,422.82 km) |
| Greenock to Kyustendil | 1,542.40 mi (2,482.26 km) |
| Greenock to Levski | 1,575.90 mi (2,536.16 km) |
| Greenock to Lom | 1,485.67 mi (2,390.96 km) |
| Greenock to Lovech | 1,572.08 mi (2,530.03 km) |
| Greenock to Lukovit | 1,549.18 mi (2,493.16 km) |
| Greenock to Lyaskovets | 1,609.82 mi (2,590.75 km) |
| Greenock to Mezdra | 1,534.97 mi (2,470.30 km) |
| Greenock to Momchilgrad | 1,676.20 mi (2,697.59 km) |
