| Frohburg to Devnya | 886.68 mi (1,426.97 km) |
| Frohburg to Dimitrovgrad | 875.83 mi (1,409.51 km) |
| Frohburg to Dobrich | 880.40 mi (1,416.86 km) |
| Frohburg to Dospat | 851.76 mi (1,370.77 km) |
| Frohburg to Dupnitsa | 785.71 mi (1,264.47 km) |
| Frohburg to Elhovo | 902.49 mi (1,452.41 km) |
| Frohburg to Etropole | 781.98 mi (1,258.48 km) |
| Frohburg to Gabrovo | 824.44 mi (1,326.81 km) |
| Frohburg to Gorna Oryahovitsa | 823.62 mi (1,325.48 km) |
| Frohburg to Gotse Delchev | 843.34 mi (1,357.23 km) |
| Frohburg to Harmanli | 891.95 mi (1,435.46 km) |
| Frohburg to Haskovo | 880.90 mi (1,417.67 km) |
| Frohburg to Ihtiman | 797.52 mi (1,283.48 km) |
| Frohburg to Isperih | 836.22 mi (1,345.77 km) |
| Frohburg to Kardzhali | 889.52 mi (1,431.54 km) |
