| Herstal to Karnobat | 1,148.84 mi (1,848.89 km) |
| Herstal to Kavarna | 1,173.46 mi (1,888.50 km) |
| Herstal to Kazanlak | 1,085.19 mi (1,746.44 km) |
| Herstal to Knezha | 995.38 mi (1,601.91 km) |
| Herstal to Kostinbrod | 989.78 mi (1,592.90 km) |
| Herstal to Kozloduy | 969.72 mi (1,560.61 km) |
| Herstal to Kyustendil | 993.00 mi (1,598.08 km) |
| Herstal to Levski | 1,043.43 mi (1,679.23 km) |
| Herstal to Lom | 947.98 mi (1,525.62 km) |
| Herstal to Lovech | 1,036.01 mi (1,667.30 km) |
| Herstal to Lukovit | 1,011.13 mi (1,627.25 km) |
| Herstal to Lyaskovets | 1,078.02 mi (1,734.91 km) |
| Herstal to Mezdra | 994.55 mi (1,600.58 km) |
| Herstal to Momchilgrad | 1,133.08 mi (1,823.51 km) |
| Herstal to Montana | 964.64 mi (1,552.43 km) |
