| Frankfort to Devnya | 5,401.71 mi (8,693.22 km) |
| Frankfort to Dimitrovgrad | 5,380.48 mi (8,659.05 km) |
| Frankfort to Dobrich | 5,395.42 mi (8,683.08 km) |
| Frankfort to Dospat | 5,342.66 mi (8,598.18 km) |
| Frankfort to Dupnitsa | 5,274.09 mi (8,487.83 km) |
| Frankfort to Elhovo | 5,412.32 mi (8,710.29 km) |
| Frankfort to Etropole | 5,283.33 mi (8,502.69 km) |
| Frankfort to Gabrovo | 5,333.21 mi (8,582.97 km) |
| Frankfort to Gorna Oryahovitsa | 5,335.14 mi (8,586.08 km) |
| Frankfort to Gotse Delchev | 5,329.30 mi (8,576.68 km) |
| Frankfort to Harmanli | 5,397.38 mi (8,686.25 km) |
| Frankfort to Haskovo | 5,384.50 mi (8,665.52 km) |
| Frankfort to Ihtiman | 5,293.80 mi (8,519.55 km) |
| Frankfort to Isperih | 5,351.27 mi (8,612.04 km) |
| Frankfort to Kardzhali | 5,389.60 mi (8,673.73 km) |
