| Helena to Devnya | 5,757.24 mi (9,265.39 km) |
| Helena to Dimitrovgrad | 5,783.22 mi (9,307.19 km) |
| Helena to Dobrich | 5,741.61 mi (9,240.22 km) |
| Helena to Dospat | 5,772.73 mi (9,290.31 km) |
| Helena to Dupnitsa | 5,709.49 mi (9,188.53 km) |
| Helena to Elhovo | 5,798.93 mi (9,332.48 km) |
| Helena to Etropole | 5,696.91 mi (9,168.29 km) |
| Helena to Gabrovo | 5,726.98 mi (9,216.68 km) |
| Helena to Gorna Oryahovitsa | 5,719.36 mi (9,204.42 km) |
| Helena to Gotse Delchev | 5,767.01 mi (9,281.11 km) |
| Helena to Harmanli | 5,797.51 mi (9,330.19 km) |
| Helena to Haskovo | 5,789.55 mi (9,317.38 km) |
| Helena to Ihtiman | 5,716.38 mi (9,199.63 km) |
| Helena to Isperih | 5,709.80 mi (9,189.04 km) |
| Helena to Kardzhali | 5,802.05 mi (9,337.50 km) |
