| Middle River to Devnya | 5,021.13 mi (8,080.73 km) |
| Middle River to Dimitrovgrad | 4,991.53 mi (8,033.09 km) |
| Middle River to Dobrich | 5,016.69 mi (8,073.58 km) |
| Middle River to Dospat | 4,949.36 mi (7,965.23 km) |
| Middle River to Dupnitsa | 4,880.80 mi (7,854.88 km) |
| Middle River to Elhovo | 5,025.83 mi (8,088.30 km) |
| Middle River to Etropole | 4,893.80 mi (7,875.81 km) |
| Middle River to Gabrovo | 4,946.56 mi (7,960.72 km) |
| Middle River to Gorna Oryahovitsa | 4,950.21 mi (7,966.60 km) |
| Middle River to Gotse Delchev | 4,934.84 mi (7,941.86 km) |
| Middle River to Harmanli | 5,008.66 mi (8,060.66 km) |
| Middle River to Haskovo | 4,995.07 mi (8,038.79 km) |
| Middle River to Ihtiman | 4,902.51 mi (7,889.82 km) |
| Middle River to Isperih | 4,970.89 mi (7,999.87 km) |
| Middle River to Kardzhali | 4,998.78 mi (8,044.76 km) |
