| Gilbert to Karlovo | 6,512.73 mi (10,481.22 km) |
| Gilbert to Karnobat | 6,575.80 mi (10,582.73 km) |
| Gilbert to Kavarna | 6,566.72 mi (10,568.11 km) |
| Gilbert to Kazanlak | 6,531.52 mi (10,511.47 km) |
| Gilbert to Knezha | 6,443.33 mi (10,369.54 km) |
| Gilbert to Kostinbrod | 6,455.85 mi (10,389.69 km) |
| Gilbert to Kozloduy | 6,417.22 mi (10,327.52 km) |
| Gilbert to Kyustendil | 6,469.31 mi (10,411.34 km) |
| Gilbert to Levski | 6,481.29 mi (10,430.64 km) |
| Gilbert to Lom | 6,400.29 mi (10,300.27 km) |
| Gilbert to Lovech | 6,482.38 mi (10,432.38 km) |
| Gilbert to Lukovit | 6,462.62 mi (10,400.58 km) |
| Gilbert to Lyaskovets | 6,513.17 mi (10,481.93 km) |
| Gilbert to Mezdra | 6,451.66 mi (10,382.95 km) |
| Gilbert to Momchilgrad | 6,593.49 mi (10,611.20 km) |
