| Romeoville to Karlovo | 5,275.03 mi (8,489.35 km) |
| Romeoville to Karnobat | 5,353.08 mi (8,614.95 km) |
| Romeoville to Kavarna | 5,360.05 mi (8,626.16 km) |
| Romeoville to Kazanlak | 5,297.64 mi (8,525.73 km) |
| Romeoville to Knezha | 5,207.47 mi (8,380.61 km) |
| Romeoville to Kostinbrod | 5,209.02 mi (8,383.11 km) |
| Romeoville to Kozloduy | 5,181.28 mi (8,338.46 km) |
| Romeoville to Kyustendil | 5,215.00 mi (8,392.74 km) |
| Romeoville to Levski | 5,251.43 mi (8,451.36 km) |
| Romeoville to Lom | 5,161.45 mi (8,306.55 km) |
| Romeoville to Lovech | 5,247.89 mi (8,445.66 km) |
| Romeoville to Lukovit | 5,224.96 mi (8,408.76 km) |
| Romeoville to Lyaskovets | 5,285.21 mi (8,505.72 km) |
| Romeoville to Mezdra | 5,210.55 mi (8,385.57 km) |
| Romeoville to Momchilgrad | 5,351.46 mi (8,612.34 km) |
