| Soure to Devnya | 1,867.46 mi (3,005.39 km) |
| Soure to Dimitrovgrad | 1,777.18 mi (2,860.09 km) |
| Soure to Dobrich | 1,878.45 mi (3,023.07 km) |
| Soure to Dospat | 1,707.47 mi (2,747.91 km) |
| Soure to Dupnitsa | 1,649.22 mi (2,654.17 km) |
| Soure to Elhovo | 1,825.32 mi (2,937.57 km) |
| Soure to Etropole | 1,690.46 mi (2,720.54 km) |
| Soure to Gabrovo | 1,757.55 mi (2,828.50 km) |
| Soure to Gorna Oryahovitsa | 1,774.36 mi (2,855.55 km) |
| Soure to Gotse Delchev | 1,685.99 mi (2,713.34 km) |
| Soure to Harmanli | 1,793.49 mi (2,886.34 km) |
| Soure to Haskovo | 1,776.50 mi (2,859.00 km) |
| Soure to Ihtiman | 1,683.57 mi (2,709.44 km) |
| Soure to Isperih | 1,827.75 mi (2,941.49 km) |
| Soure to Kardzhali | 1,768.88 mi (2,846.74 km) |
