| Sondershausen to Devnya | 960.51 mi (1,545.79 km) |
| Sondershausen to Dimitrovgrad | 946.31 mi (1,522.94 km) |
| Sondershausen to Dobrich | 954.75 mi (1,536.52 km) |
| Sondershausen to Dospat | 919.58 mi (1,479.92 km) |
| Sondershausen to Dupnitsa | 852.81 mi (1,372.46 km) |
| Sondershausen to Elhovo | 974.22 mi (1,567.86 km) |
| Sondershausen to Etropole | 851.54 mi (1,370.43 km) |
| Sondershausen to Gabrovo | 895.80 mi (1,441.65 km) |
| Sondershausen to Gorna Oryahovitsa | 895.76 mi (1,441.58 km) |
| Sondershausen to Gotse Delchev | 910.29 mi (1,464.97 km) |
| Sondershausen to Harmanli | 962.63 mi (1,549.20 km) |
| Sondershausen to Haskovo | 951.16 mi (1,530.75 km) |
| Sondershausen to Ihtiman | 866.11 mi (1,393.88 km) |
| Sondershausen to Isperih | 910.08 mi (1,464.62 km) |
| Sondershausen to Kardzhali | 959.11 mi (1,543.53 km) |
