| Harrow on the Hill to Montana | 1,228.25 mi (1,976.67 km) |
| Harrow on the Hill to Nova Zagora | 1,379.82 mi (2,220.60 km) |
| Harrow on the Hill to Novi Iskar | 1,258.29 mi (2,025.03 km) |
| Harrow on the Hill to Novi Pazar | 1,395.10 mi (2,245.19 km) |
| Harrow on the Hill to Omurtag | 1,372.13 mi (2,208.23 km) |
| Harrow on the Hill to Panagyurishte | 1,304.58 mi (2,099.52 km) |
| Harrow on the Hill to Parvomay | 1,363.34 mi (2,194.08 km) |
| Harrow on the Hill to Pavlikeni | 1,321.12 mi (2,126.14 km) |
| Harrow on the Hill to Pazardzhik | 1,323.26 mi (2,129.59 km) |
| Harrow on the Hill to Pernik | 1,253.88 mi (2,017.93 km) |
| Harrow on the Hill to Peshtera | 1,329.00 mi (2,138.82 km) |
| Harrow on the Hill to Petrich | 1,313.21 mi (2,113.41 km) |
| Harrow on the Hill to Pleven | 1,285.65 mi (2,069.06 km) |
| Harrow on the Hill to Plovdiv | 1,342.26 mi (2,160.16 km) |
| Harrow on the Hill to Pomorie | 1,443.01 mi (2,322.30 km) |
