| Mettmann to Devnya | 1,108.95 mi (1,784.69 km) |
| Mettmann to Dimitrovgrad | 1,083.57 mi (1,743.83 km) |
| Mettmann to Dobrich | 1,105.28 mi (1,778.78 km) |
| Mettmann to Dospat | 1,049.26 mi (1,688.63 km) |
| Mettmann to Dupnitsa | 981.12 mi (1,578.96 km) |
| Mettmann to Elhovo | 1,115.26 mi (1,794.84 km) |
| Mettmann to Etropole | 986.76 mi (1,588.04 km) |
| Mettmann to Gabrovo | 1,036.10 mi (1,667.44 km) |
| Mettmann to Gorna Oryahovitsa | 1,038.56 mi (1,671.41 km) |
| Mettmann to Gotse Delchev | 1,037.65 mi (1,669.94 km) |
| Mettmann to Harmanli | 1,100.39 mi (1,770.91 km) |
| Mettmann to Haskovo | 1,087.75 mi (1,750.56 km) |
| Mettmann to Ihtiman | 998.44 mi (1,606.84 km) |
| Mettmann to Isperih | 1,058.81 mi (1,703.99 km) |
| Mettmann to Kardzhali | 1,093.60 mi (1,759.98 km) |
