| Glenn Dale to Karlovo | 4,966.10 mi (7,992.16 km) |
| Glenn Dale to Karnobat | 5,054.46 mi (8,134.37 km) |
| Glenn Dale to Kavarna | 5,073.86 mi (8,165.59 km) |
| Glenn Dale to Kazanlak | 4,991.31 mi (8,032.73 km) |
| Glenn Dale to Knezha | 4,901.55 mi (7,888.29 km) |
| Glenn Dale to Kostinbrod | 4,893.97 mi (7,876.08 km) |
| Glenn Dale to Kozloduy | 4,875.89 mi (7,846.99 km) |
| Glenn Dale to Kyustendil | 4,893.51 mi (7,875.34 km) |
| Glenn Dale to Levski | 4,949.41 mi (7,965.30 km) |
| Glenn Dale to Lom | 4,854.11 mi (7,811.94 km) |
| Glenn Dale to Lovech | 4,942.18 mi (7,953.67 km) |
| Glenn Dale to Lukovit | 4,917.18 mi (7,913.43 km) |
| Glenn Dale to Lyaskovets | 4,983.95 mi (8,020.90 km) |
| Glenn Dale to Mezdra | 4,900.23 mi (7,886.15 km) |
| Glenn Dale to Momchilgrad | 5,037.27 mi (8,106.70 km) |
