| Sonneberg to Devnya | 916.17 mi (1,474.43 km) |
| Sonneberg to Dimitrovgrad | 894.67 mi (1,439.83 km) |
| Sonneberg to Dobrich | 912.07 mi (1,467.83 km) |
| Sonneberg to Dospat | 864.08 mi (1,390.60 km) |
| Sonneberg to Dupnitsa | 796.57 mi (1,281.96 km) |
| Sonneberg to Elhovo | 924.81 mi (1,488.34 km) |
| Sonneberg to Etropole | 798.67 mi (1,285.33 km) |
| Sonneberg to Gabrovo | 845.86 mi (1,361.28 km) |
| Sonneberg to Gorna Oryahovitsa | 847.38 mi (1,363.73 km) |
| Sonneberg to Gotse Delchev | 853.74 mi (1,373.95 km) |
| Sonneberg to Harmanli | 911.29 mi (1,466.58 km) |
| Sonneberg to Haskovo | 899.16 mi (1,447.06 km) |
| Sonneberg to Ihtiman | 811.79 mi (1,306.44 km) |
| Sonneberg to Isperih | 865.93 mi (1,393.58 km) |
| Sonneberg to Kardzhali | 906.00 mi (1,458.07 km) |
