| Frogn to Devnya | 1,342.98 mi (2,161.31 km) |
| Frogn to Dimitrovgrad | 1,375.29 mi (2,213.31 km) |
| Frogn to Dobrich | 1,327.33 mi (2,136.12 km) |
| Frogn to Dospat | 1,374.14 mi (2,211.47 km) |
| Frogn to Dupnitsa | 1,315.86 mi (2,117.67 km) |
| Frogn to Elhovo | 1,387.33 mi (2,232.69 km) |
| Frogn to Etropole | 1,294.67 mi (2,083.57 km) |
| Frogn to Gabrovo | 1,317.99 mi (2,121.10 km) |
| Frogn to Gorna Oryahovitsa | 1,308.45 mi (2,105.75 km) |
| Frogn to Gotse Delchev | 1,371.91 mi (2,207.87 km) |
| Frogn to Harmanli | 1,388.65 mi (2,234.82 km) |
| Frogn to Haskovo | 1,382.09 mi (2,224.26 km) |
| Frogn to Ihtiman | 1,316.89 mi (2,119.32 km) |
| Frogn to Isperih | 1,295.79 mi (2,085.37 km) |
| Frogn to Kardzhali | 1,396.37 mi (2,247.24 km) |
