| Irmo to Karlovo | 5,373.14 mi (8,647.23 km) |
| Irmo to Karnobat | 5,462.92 mi (8,791.72 km) |
| Irmo to Kavarna | 5,483.97 mi (8,825.60 km) |
| Irmo to Kazanlak | 5,398.71 mi (8,688.39 km) |
| Irmo to Knezha | 5,309.19 mi (8,544.31 km) |
| Irmo to Kostinbrod | 5,300.15 mi (8,529.77 km) |
| Irmo to Kozloduy | 5,283.65 mi (8,503.22 km) |
| Irmo to Kyustendil | 5,298.57 mi (8,527.23 km) |
| Irmo to Levski | 5,357.54 mi (8,622.13 km) |
| Irmo to Lom | 5,261.62 mi (8,467.75 km) |
| Irmo to Lovech | 5,349.77 mi (8,609.63 km) |
| Irmo to Lukovit | 5,324.49 mi (8,568.94 km) |
| Irmo to Lyaskovets | 5,392.14 mi (8,677.82 km) |
| Irmo to Mezdra | 5,307.17 mi (8,541.07 km) |
| Irmo to Momchilgrad | 5,443.32 mi (8,760.17 km) |
