| Birkenfeld to Devnya | 984.93 mi (1,585.10 km) |
| Birkenfeld to Dimitrovgrad | 944.52 mi (1,520.05 km) |
| Birkenfeld to Dobrich | 984.80 mi (1,584.89 km) |
| Birkenfeld to Dospat | 902.50 mi (1,452.44 km) |
| Birkenfeld to Dupnitsa | 833.90 mi (1,342.04 km) |
| Birkenfeld to Elhovo | 980.49 mi (1,577.94 km) |
| Birkenfeld to Etropole | 846.66 mi (1,362.57 km) |
| Birkenfeld to Gabrovo | 901.39 mi (1,450.65 km) |
| Birkenfeld to Gorna Oryahovitsa | 907.13 mi (1,459.89 km) |
| Birkenfeld to Gotse Delchev | 888.81 mi (1,430.39 km) |
| Birkenfeld to Harmanli | 961.73 mi (1,547.76 km) |
| Birkenfeld to Haskovo | 947.86 mi (1,525.44 km) |
| Birkenfeld to Ihtiman | 855.03 mi (1,376.03 km) |
| Birkenfeld to Isperih | 935.95 mi (1,506.26 km) |
| Birkenfeld to Kardzhali | 951.30 mi (1,530.97 km) |
