| Boone to Devnya | 5,377.47 mi (8,654.19 km) |
| Boone to Dimitrovgrad | 5,349.04 mi (8,608.44 km) |
| Boone to Dobrich | 5,372.72 mi (8,646.56 km) |
| Boone to Dospat | 5,307.33 mi (8,541.33 km) |
| Boone to Dupnitsa | 5,238.76 mi (8,430.97 km) |
| Boone to Elhovo | 5,383.04 mi (8,663.16 km) |
| Boone to Etropole | 5,251.35 mi (8,451.23 km) |
| Boone to Gabrovo | 5,303.76 mi (8,535.58 km) |
| Boone to Gorna Oryahovitsa | 5,307.18 mi (8,541.09 km) |
| Boone to Gotse Delchev | 5,292.92 mi (8,518.14 km) |
| Boone to Harmanli | 5,366.14 mi (8,635.97 km) |
| Boone to Haskovo | 5,352.64 mi (8,614.24 km) |
| Boone to Ihtiman | 5,260.26 mi (8,465.58 km) |
| Boone to Isperih | 5,327.18 mi (8,573.26 km) |
| Boone to Kardzhali | 5,356.51 mi (8,620.46 km) |
