| Trets to Devnya | 1,096.63 mi (1,764.86 km) |
| Trets to Dimitrovgrad | 1,012.57 mi (1,629.58 km) |
| Trets to Dobrich | 1,106.61 mi (1,780.91 km) |
| Trets to Dospat | 946.87 mi (1,523.84 km) |
| Trets to Dupnitsa | 885.10 mi (1,424.43 km) |
| Trets to Elhovo | 1,059.36 mi (1,704.87 km) |
| Trets to Etropole | 922.45 mi (1,484.53 km) |
| Trets to Gabrovo | 988.80 mi (1,591.32 km) |
| Trets to Gorna Oryahovitsa | 1,004.37 mi (1,616.38 km) |
| Trets to Gotse Delchev | 926.52 mi (1,491.09 km) |
| Trets to Harmanli | 1,029.35 mi (1,656.58 km) |
| Trets to Haskovo | 1,012.63 mi (1,629.68 km) |
| Trets to Ihtiman | 917.86 mi (1,477.15 km) |
| Trets to Isperih | 1,055.73 mi (1,699.04 km) |
| Trets to Kardzhali | 1,007.06 mi (1,620.70 km) |
