| Alken to Dimitrovgrad | 1,136.43 mi (1,828.91 km) |
| Alken to Dobrich | 1,165.23 mi (1,875.26 km) |
| Alken to Dospat | 1,098.42 mi (1,767.74 km) |
| Alken to Dupnitsa | 1,029.94 mi (1,657.53 km) |
| Alken to Elhovo | 1,169.99 mi (1,882.92 km) |
| Alken to Etropole | 1,038.99 mi (1,672.09 km) |
| Alken to Gabrovo | 1,090.72 mi (1,755.34 km) |
| Alken to Gorna Oryahovitsa | 1,094.49 mi (1,761.41 km) |
| Alken to Gotse Delchev | 1,085.71 mi (1,747.28 km) |
| Alken to Harmanli | 1,153.45 mi (1,856.30 km) |
| Alken to Haskovo | 1,140.25 mi (1,835.05 km) |
| Alken to Ihtiman | 1,049.16 mi (1,688.47 km) |
| Alken to Isperih | 1,117.88 mi (1,799.05 km) |
| Alken to Kardzhali | 1,145.01 mi (1,842.71 km) |
| Alken to Karlovo | 1,079.16 mi (1,736.74 km) |
