| Alpen to Devnya | 1,135.54 mi (1,827.48 km) |
| Alpen to Dimitrovgrad | 1,111.52 mi (1,788.82 km) |
| Alpen to Dobrich | 1,131.53 mi (1,821.02 km) |
| Alpen to Dospat | 1,077.84 mi (1,734.62 km) |
| Alpen to Dupnitsa | 1,009.77 mi (1,625.06 km) |
| Alpen to Elhovo | 1,142.83 mi (1,839.21 km) |
| Alpen to Etropole | 1,014.86 mi (1,633.27 km) |
| Alpen to Gabrovo | 1,063.72 mi (1,711.89 km) |
| Alpen to Gorna Oryahovitsa | 1,065.89 mi (1,715.39 km) |
| Alpen to Gotse Delchev | 1,066.39 mi (1,716.18 km) |
| Alpen to Harmanli | 1,128.30 mi (1,815.83 km) |
| Alpen to Haskovo | 1,115.77 mi (1,795.66 km) |
| Alpen to Ihtiman | 1,026.80 mi (1,652.47 km) |
| Alpen to Isperih | 1,085.33 mi (1,746.68 km) |
| Alpen to Kardzhali | 1,121.82 mi (1,805.39 km) |
