| Siechnice to Devnya | 727.73 mi (1,171.17 km) |
| Siechnice to Dimitrovgrad | 738.32 mi (1,188.21 km) |
| Siechnice to Dobrich | 717.52 mi (1,154.74 km) |
| Siechnice to Dospat | 728.98 mi (1,173.18 km) |
| Siechnice to Dupnitsa | 668.33 mi (1,075.57 km) |
| Siechnice to Elhovo | 757.19 mi (1,218.59 km) |
| Siechnice to Etropole | 651.74 mi (1,048.88 km) |
| Siechnice to Gabrovo | 682.84 mi (1,098.92 km) |
| Siechnice to Gorna Oryahovitsa | 677.20 mi (1,089.84 km) |
| Siechnice to Gotse Delchev | 725.11 mi (1,166.95 km) |
| Siechnice to Harmanli | 753.03 mi (1,211.88 km) |
| Siechnice to Haskovo | 744.48 mi (1,198.12 km) |
| Siechnice to Ihtiman | 672.10 mi (1,081.63 km) |
| Siechnice to Isperih | 677.81 mi (1,090.83 km) |
| Siechnice to Kardzhali | 756.65 mi (1,217.71 km) |
