| Os to Devnya | 1,493.38 mi (2,403.37 km) |
| Os to Dimitrovgrad | 1,515.79 mi (2,439.43 km) |
| Os to Dobrich | 1,479.47 mi (2,380.98 km) |
| Os to Dospat | 1,507.91 mi (2,426.75 km) |
| Os to Dupnitsa | 1,446.57 mi (2,328.03 km) |
| Os to Elhovo | 1,531.72 mi (2,465.07 km) |
| Os to Etropole | 1,430.65 mi (2,302.40 km) |
| Os to Gabrovo | 1,459.48 mi (2,348.80 km) |
| Os to Gorna Oryahovitsa | 1,452.02 mi (2,336.80 km) |
| Os to Gotse Delchev | 1,503.63 mi (2,419.86 km) |
| Os to Harmanli | 1,530.02 mi (2,462.33 km) |
| Os to Haskovo | 1,522.19 mi (2,449.72 km) |
| Os to Ihtiman | 1,451.08 mi (2,335.29 km) |
| Os to Isperih | 1,444.96 mi (2,325.45 km) |
| Os to Kardzhali | 1,535.02 mi (2,470.37 km) |
