| Erkrath to Devnya | 1,110.37 mi (1,786.97 km) |
| Erkrath to Dimitrovgrad | 1,084.68 mi (1,745.63 km) |
| Erkrath to Dobrich | 1,106.76 mi (1,781.16 km) |
| Erkrath to Dospat | 1,050.20 mi (1,690.13 km) |
| Erkrath to Dupnitsa | 982.03 mi (1,580.43 km) |
| Erkrath to Elhovo | 1,116.47 mi (1,796.79 km) |
| Erkrath to Etropole | 987.84 mi (1,589.77 km) |
| Erkrath to Gabrovo | 1,037.30 mi (1,669.37 km) |
| Erkrath to Gorna Oryahovitsa | 1,039.83 mi (1,673.44 km) |
| Erkrath to Gotse Delchev | 1,038.53 mi (1,671.36 km) |
| Erkrath to Harmanli | 1,101.52 mi (1,772.72 km) |
| Erkrath to Haskovo | 1,088.85 mi (1,752.33 km) |
| Erkrath to Ihtiman | 999.45 mi (1,608.46 km) |
| Erkrath to Isperih | 1,060.24 mi (1,706.29 km) |
| Erkrath to Kardzhali | 1,094.65 mi (1,761.66 km) |
