| Os to Montana | 1,377.65 mi (2,217.11 km) |
| Os to Nova Zagora | 1,498.64 mi (2,411.82 km) |
| Os to Novi Iskar | 1,418.20 mi (2,282.37 km) |
| Os to Novi Pazar | 1,476.11 mi (2,375.57 km) |
| Os to Omurtag | 1,471.53 mi (2,368.19 km) |
| Os to Panagyurishte | 1,455.41 mi (2,342.26 km) |
| Os to Parvomay | 1,503.77 mi (2,420.09 km) |
| Os to Pavlikeni | 1,436.28 mi (2,311.48 km) |
| Os to Pazardzhik | 1,477.39 mi (2,377.64 km) |
| Os to Pernik | 1,423.76 mi (2,291.32 km) |
| Os to Peshtera | 1,487.00 mi (2,393.09 km) |
| Os to Petrich | 1,503.14 mi (2,419.07 km) |
| Os to Pleven | 1,409.62 mi (2,268.56 km) |
| Os to Plovdiv | 1,489.95 mi (2,397.84 km) |
| Os to Pomorie | 1,533.42 mi (2,467.80 km) |
