| Grangemouth to Karlovo | 1,563.78 mi (2,516.66 km) |
| Grangemouth to Karnobat | 1,641.85 mi (2,642.30 km) |
| Grangemouth to Kavarna | 1,652.59 mi (2,659.59 km) |
| Grangemouth to Kazanlak | 1,586.08 mi (2,552.54 km) |
| Grangemouth to Knezha | 1,495.95 mi (2,407.50 km) |
| Grangemouth to Kostinbrod | 1,499.47 mi (2,413.16 km) |
| Grangemouth to Kozloduy | 1,469.74 mi (2,365.31 km) |
| Grangemouth to Kyustendil | 1,508.23 mi (2,427.27 km) |
| Grangemouth to Levski | 1,539.80 mi (2,478.06 km) |
| Grangemouth to Lom | 1,450.15 mi (2,333.79 km) |
| Grangemouth to Lovech | 1,536.32 mi (2,472.46 km) |
| Grangemouth to Lukovit | 1,513.63 mi (2,435.95 km) |
| Grangemouth to Lyaskovets | 1,573.63 mi (2,532.51 km) |
| Grangemouth to Mezdra | 1,499.68 mi (2,413.49 km) |
| Grangemouth to Momchilgrad | 1,641.09 mi (2,641.08 km) |
