| Hardenberg to Montana | 990.93 mi (1,594.75 km) |
| Hardenberg to Nova Zagora | 1,135.63 mi (1,827.62 km) |
| Hardenberg to Novi Iskar | 1,025.71 mi (1,650.71 km) |
| Hardenberg to Novi Pazar | 1,139.30 mi (1,833.52 km) |
| Hardenberg to Omurtag | 1,121.46 mi (1,804.81 km) |
| Hardenberg to Panagyurishte | 1,069.82 mi (1,721.71 km) |
| Hardenberg to Parvomay | 1,126.24 mi (1,812.50 km) |
| Hardenberg to Pavlikeni | 1,074.33 mi (1,728.97 km) |
| Hardenberg to Pazardzhik | 1,090.18 mi (1,754.48 km) |
| Hardenberg to Pernik | 1,024.99 mi (1,649.56 km) |
| Hardenberg to Peshtera | 1,097.50 mi (1,766.25 km) |
| Hardenberg to Petrich | 1,093.82 mi (1,760.33 km) |
| Hardenberg to Pleven | 1,040.92 mi (1,675.20 km) |
| Hardenberg to Plovdiv | 1,107.27 mi (1,781.99 km) |
| Hardenberg to Pomorie | 1,191.06 mi (1,916.83 km) |
