| Unterwellenborn to Devnya | 915.10 mi (1,472.72 km) |
| Unterwellenborn to Dimitrovgrad | 897.07 mi (1,443.69 km) |
| Unterwellenborn to Dobrich | 910.27 mi (1,464.94 km) |
| Unterwellenborn to Dospat | 868.51 mi (1,397.73 km) |
| Unterwellenborn to Dupnitsa | 801.39 mi (1,289.71 km) |
| Unterwellenborn to Elhovo | 926.12 mi (1,490.44 km) |
| Unterwellenborn to Etropole | 801.67 mi (1,290.16 km) |
| Unterwellenborn to Gabrovo | 847.39 mi (1,363.75 km) |
| Unterwellenborn to Gorna Oryahovitsa | 848.16 mi (1,364.98 km) |
| Unterwellenborn to Gotse Delchev | 858.75 mi (1,382.03 km) |
| Unterwellenborn to Harmanli | 913.54 mi (1,470.21 km) |
| Unterwellenborn to Haskovo | 901.75 mi (1,451.22 km) |
| Unterwellenborn to Ihtiman | 815.56 mi (1,312.52 km) |
| Unterwellenborn to Isperih | 864.76 mi (1,391.69 km) |
| Unterwellenborn to Kardzhali | 909.16 mi (1,463.15 km) |
