| Hirson to Karlovo | 1,104.92 mi (1,778.20 km) |
| Hirson to Karnobat | 1,197.59 mi (1,927.33 km) |
| Hirson to Kavarna | 1,227.10 mi (1,974.83 km) |
| Hirson to Kazanlak | 1,130.93 mi (1,820.06 km) |
| Hirson to Knezha | 1,041.94 mi (1,676.84 km) |
| Hirson to Kostinbrod | 1,031.68 mi (1,660.33 km) |
| Hirson to Kozloduy | 1,016.75 mi (1,636.29 km) |
| Hirson to Kyustendil | 1,031.44 mi (1,659.95 km) |
| Hirson to Levski | 1,091.50 mi (1,756.59 km) |
| Hirson to Lom | 994.17 mi (1,599.96 km) |
| Hirson to Lovech | 1,082.38 mi (1,741.92 km) |
| Hirson to Lukovit | 1,056.64 mi (1,700.50 km) |
| Hirson to Lyaskovets | 1,126.17 mi (1,812.39 km) |
| Hirson to Mezdra | 1,038.89 mi (1,671.93 km) |
| Hirson to Momchilgrad | 1,174.92 mi (1,890.86 km) |
