| Siegburg to Devnya | 1,088.02 mi (1,750.99 km) |
| Siegburg to Dimitrovgrad | 1,059.84 mi (1,705.65 km) |
| Siegburg to Dobrich | 1,084.99 mi (1,746.12 km) |
| Siegburg to Dospat | 1,024.07 mi (1,648.08 km) |
| Siegburg to Dupnitsa | 955.78 mi (1,538.18 km) |
| Siegburg to Elhovo | 1,092.36 mi (1,757.98 km) |
| Siegburg to Etropole | 962.74 mi (1,549.37 km) |
| Siegburg to Gabrovo | 1,013.12 mi (1,630.46 km) |
| Siegburg to Gorna Oryahovitsa | 1,016.19 mi (1,635.39 km) |
| Siegburg to Gotse Delchev | 1,012.06 mi (1,628.75 km) |
| Siegburg to Harmanli | 1,076.75 mi (1,732.87 km) |
| Siegburg to Haskovo | 1,063.87 mi (1,712.13 km) |
| Siegburg to Ihtiman | 973.82 mi (1,567.21 km) |
| Siegburg to Isperih | 1,038.02 mi (1,670.53 km) |
| Siegburg to Kardzhali | 1,069.28 mi (1,720.84 km) |
