| Billings to Devnya | 5,724.10 mi (9,212.05 km) |
| Billings to Dimitrovgrad | 5,744.57 mi (9,244.99 km) |
| Billings to Dobrich | 5,709.47 mi (9,188.50 km) |
| Billings to Dospat | 5,730.71 mi (9,222.69 km) |
| Billings to Dupnitsa | 5,666.38 mi (9,119.16 km) |
| Billings to Elhovo | 5,762.34 mi (9,273.59 km) |
| Billings to Etropole | 5,656.34 mi (9,103.00 km) |
| Billings to Gabrovo | 5,689.01 mi (9,155.57 km) |
| Billings to Gorna Oryahovitsa | 5,682.48 mi (9,145.07 km) |
| Billings to Gotse Delchev | 5,724.04 mi (9,211.94 km) |
| Billings to Harmanli | 5,759.28 mi (9,268.67 km) |
| Billings to Haskovo | 5,750.67 mi (9,254.81 km) |
| Billings to Ihtiman | 5,674.87 mi (9,132.82 km) |
| Billings to Isperih | 5,675.95 mi (9,134.56 km) |
| Billings to Kardzhali | 5,762.37 mi (9,273.63 km) |
