| Box Elder to Devnya | 5,679.18 mi (9,139.76 km) |
| Box Elder to Dimitrovgrad | 5,690.33 mi (9,157.71 km) |
| Box Elder to Dobrich | 5,666.31 mi (9,119.05 km) |
| Box Elder to Dospat | 5,670.87 mi (9,126.39 km) |
| Box Elder to Dupnitsa | 5,604.98 mi (9,020.35 km) |
| Box Elder to Elhovo | 5,711.48 mi (9,191.74 km) |
| Box Elder to Etropole | 5,599.25 mi (9,011.12 km) |
| Box Elder to Gabrovo | 5,636.15 mi (9,070.50 km) |
| Box Elder to Gorna Oryahovitsa | 5,631.49 mi (9,063.01 km) |
| Box Elder to Gotse Delchev | 5,662.61 mi (9,113.09 km) |
| Box Elder to Harmanli | 5,705.68 mi (9,182.41 km) |
| Box Elder to Haskovo | 5,696.02 mi (9,166.85 km) |
| Box Elder to Ihtiman | 5,616.11 mi (9,038.25 km) |
| Box Elder to Isperih | 5,630.06 mi (9,060.70 km) |
| Box Elder to Kardzhali | 5,706.31 mi (9,183.42 km) |
