| Skien to Devnya | 1,342.88 mi (2,161.15 km) |
| Skien to Dimitrovgrad | 1,370.37 mi (2,205.39 km) |
| Skien to Dobrich | 1,328.13 mi (2,137.42 km) |
| Skien to Dospat | 1,366.23 mi (2,198.73 km) |
| Skien to Dupnitsa | 1,306.59 mi (2,102.76 km) |
| Skien to Elhovo | 1,384.25 mi (2,227.73 km) |
| Skien to Etropole | 1,287.63 mi (2,072.25 km) |
| Skien to Gabrovo | 1,313.47 mi (2,113.83 km) |
| Skien to Gorna Oryahovitsa | 1,304.91 mi (2,100.05 km) |
| Skien to Gotse Delchev | 1,363.13 mi (2,193.74 km) |
| Skien to Harmanli | 1,384.14 mi (2,227.56 km) |
| Skien to Haskovo | 1,376.99 mi (2,216.05 km) |
| Skien to Ihtiman | 1,309.10 mi (2,106.79 km) |
| Skien to Isperih | 1,295.01 mi (2,084.12 km) |
| Skien to Kardzhali | 1,390.62 mi (2,237.99 km) |
