| Boo to Devnya | 1,180.41 mi (1,899.69 km) |
| Boo to Dimitrovgrad | 1,233.86 mi (1,985.71 km) |
| Boo to Dobrich | 1,161.10 mi (1,868.61 km) |
| Boo to Dospat | 1,246.87 mi (2,006.65 km) |
| Boo to Dupnitsa | 1,196.41 mi (1,925.44 km) |
| Boo to Elhovo | 1,237.23 mi (1,991.13 km) |
| Boo to Etropole | 1,164.87 mi (1,874.68 km) |
| Boo to Gabrovo | 1,175.83 mi (1,892.32 km) |
| Boo to Gorna Oryahovitsa | 1,161.98 mi (1,870.03 km) |
| Boo to Gotse Delchev | 1,248.89 mi (2,009.90 km) |
| Boo to Harmanli | 1,245.07 mi (2,003.74 km) |
| Boo to Haskovo | 1,241.38 mi (1,997.81 km) |
| Boo to Ihtiman | 1,190.22 mi (1,915.47 km) |
| Boo to Isperih | 1,137.08 mi (1,829.95 km) |
| Boo to Kardzhali | 1,258.41 mi (2,025.21 km) |
