| Ostroleka to Devnya | 734.01 mi (1,181.27 km) |
| Ostroleka to Dimitrovgrad | 783.74 mi (1,261.31 km) |
| Ostroleka to Dobrich | 716.10 mi (1,152.45 km) |
| Ostroleka to Dospat | 798.01 mi (1,284.27 km) |
| Ostroleka to Dupnitsa | 749.76 mi (1,206.63 km) |
| Ostroleka to Elhovo | 787.81 mi (1,267.86 km) |
| Ostroleka to Etropole | 715.86 mi (1,152.06 km) |
| Ostroleka to Gabrovo | 725.71 mi (1,167.92 km) |
| Ostroleka to Gorna Oryahovitsa | 712.03 mi (1,145.90 km) |
| Ostroleka to Gotse Delchev | 800.93 mi (1,288.97 km) |
| Ostroleka to Harmanli | 795.02 mi (1,279.45 km) |
| Ostroleka to Haskovo | 791.26 mi (1,273.40 km) |
| Ostroleka to Ihtiman | 741.71 mi (1,193.67 km) |
| Ostroleka to Isperih | 689.26 mi (1,109.26 km) |
| Ostroleka to Kardzhali | 808.32 mi (1,300.87 km) |
