| Langenthal to Devnya | 998.67 mi (1,607.21 km) |
| Langenthal to Dimitrovgrad | 943.26 mi (1,518.02 km) |
| Langenthal to Dobrich | 1,001.91 mi (1,612.41 km) |
| Langenthal to Dospat | 892.81 mi (1,436.84 km) |
| Langenthal to Dupnitsa | 824.86 mi (1,327.48 km) |
| Langenthal to Elhovo | 983.37 mi (1,582.57 km) |
| Langenthal to Etropole | 845.92 mi (1,361.37 km) |
| Langenthal to Gabrovo | 905.62 mi (1,457.46 km) |
| Langenthal to Gorna Oryahovitsa | 914.72 mi (1,472.10 km) |
| Langenthal to Gotse Delchev | 876.71 mi (1,410.93 km) |
| Langenthal to Harmanli | 960.64 mi (1,546.00 km) |
| Langenthal to Haskovo | 945.60 mi (1,521.80 km) |
| Langenthal to Ihtiman | 850.24 mi (1,368.33 km) |
| Langenthal to Isperih | 951.58 mi (1,531.42 km) |
| Langenthal to Kardzhali | 946.21 mi (1,522.78 km) |
