| Harsum to Devnya | 1,022.98 mi (1,646.33 km) |
| Harsum to Dimitrovgrad | 1,012.29 mi (1,629.12 km) |
| Harsum to Dobrich | 1,016.34 mi (1,635.65 km) |
| Harsum to Dospat | 987.11 mi (1,588.60 km) |
| Harsum to Dupnitsa | 920.64 mi (1,481.62 km) |
| Harsum to Elhovo | 1,039.18 mi (1,672.39 km) |
| Harsum to Etropole | 918.13 mi (1,477.58 km) |
| Harsum to Gabrovo | 961.09 mi (1,546.72 km) |
| Harsum to Gorna Oryahovitsa | 960.32 mi (1,545.49 km) |
| Harsum to Gotse Delchev | 978.20 mi (1,574.26 km) |
| Harsum to Harmanli | 1,028.47 mi (1,655.16 km) |
| Harsum to Haskovo | 1,017.30 mi (1,637.18 km) |
| Harsum to Ihtiman | 933.25 mi (1,501.92 km) |
| Harsum to Isperih | 972.52 mi (1,565.12 km) |
| Harsum to Kardzhali | 1,025.69 mi (1,650.69 km) |
