| Iserlohn to Devnya | 1,084.64 mi (1,745.56 km) |
| Iserlohn to Dimitrovgrad | 1,061.79 mi (1,708.79 km) |
| Iserlohn to Dobrich | 1,080.46 mi (1,738.84 km) |
| Iserlohn to Dospat | 1,029.10 mi (1,656.18 km) |
| Iserlohn to Dupnitsa | 961.18 mi (1,546.87 km) |
| Iserlohn to Elhovo | 1,092.67 mi (1,758.48 km) |
| Iserlohn to Etropole | 965.34 mi (1,553.57 km) |
| Iserlohn to Gabrovo | 1,013.61 mi (1,631.25 km) |
| Iserlohn to Gorna Oryahovitsa | 1,015.51 mi (1,634.31 km) |
| Iserlohn to Gotse Delchev | 1,017.98 mi (1,638.27 km) |
| Iserlohn to Harmanli | 1,078.52 mi (1,735.71 km) |
| Iserlohn to Haskovo | 1,066.13 mi (1,715.76 km) |
| Iserlohn to Ihtiman | 977.66 mi (1,573.40 km) |
| Iserlohn to Isperih | 1,034.40 mi (1,664.70 km) |
| Iserlohn to Kardzhali | 1,072.44 mi (1,725.93 km) |
