| Boom to Dimitrovgrad | 1,179.65 mi (1,898.46 km) |
| Boom to Dobrich | 1,208.55 mi (1,944.98 km) |
| Boom to Dospat | 1,141.33 mi (1,836.80 km) |
| Boom to Dupnitsa | 1,072.83 mi (1,726.55 km) |
| Boom to Elhovo | 1,213.30 mi (1,952.63 km) |
| Boom to Etropole | 1,082.17 mi (1,741.58 km) |
| Boom to Gabrovo | 1,134.03 mi (1,825.04 km) |
| Boom to Gorna Oryahovitsa | 1,137.84 mi (1,831.18 km) |
| Boom to Gotse Delchev | 1,128.50 mi (1,816.15 km) |
| Boom to Harmanli | 1,196.68 mi (1,925.87 km) |
| Boom to Haskovo | 1,183.44 mi (1,904.56 km) |
| Boom to Ihtiman | 1,092.23 mi (1,757.77 km) |
| Boom to Isperih | 1,161.23 mi (1,868.81 km) |
| Boom to Kardzhali | 1,188.11 mi (1,912.09 km) |
| Boom to Karlovo | 1,122.40 mi (1,806.33 km) |
