| Bolingbrook to Karlovo | 5,272.23 mi (8,484.84 km) |
| Bolingbrook to Karnobat | 5,350.22 mi (8,610.35 km) |
| Bolingbrook to Kavarna | 5,357.12 mi (8,621.46 km) |
| Bolingbrook to Kazanlak | 5,294.82 mi (8,521.19 km) |
| Bolingbrook to Knezha | 5,204.66 mi (8,376.08 km) |
| Bolingbrook to Kostinbrod | 5,206.26 mi (8,378.66 km) |
| Bolingbrook to Kozloduy | 5,178.46 mi (8,333.93 km) |
| Bolingbrook to Kyustendil | 5,212.27 mi (8,388.34 km) |
| Bolingbrook to Levski | 5,248.59 mi (8,446.79 km) |
| Bolingbrook to Lom | 5,158.64 mi (8,302.03 km) |
| Bolingbrook to Lovech | 5,245.07 mi (8,441.12 km) |
| Bolingbrook to Lukovit | 5,222.16 mi (8,404.25 km) |
| Bolingbrook to Lyaskovets | 5,282.36 mi (8,501.14 km) |
| Bolingbrook to Mezdra | 5,207.76 mi (8,381.08 km) |
| Bolingbrook to Momchilgrad | 5,348.68 mi (8,607.87 km) |
