| Hillsborough to Montana | 4,715.09 mi (7,588.21 km) |
| Hillsborough to Nova Zagora | 4,866.18 mi (7,831.35 km) |
| Hillsborough to Novi Iskar | 4,744.97 mi (7,636.29 km) |
| Hillsborough to Novi Pazar | 4,877.32 mi (7,849.28 km) |
| Hillsborough to Omurtag | 4,856.72 mi (7,816.13 km) |
| Hillsborough to Panagyurishte | 4,791.37 mi (7,710.96 km) |
| Hillsborough to Parvomay | 4,850.19 mi (7,805.62 km) |
| Hillsborough to Pavlikeni | 4,806.82 mi (7,735.82 km) |
| Hillsborough to Pazardzhik | 4,809.89 mi (7,740.77 km) |
| Hillsborough to Pernik | 4,740.09 mi (7,628.44 km) |
| Hillsborough to Peshtera | 4,815.42 mi (7,749.66 km) |
| Hillsborough to Petrich | 4,796.45 mi (7,719.14 km) |
| Hillsborough to Pleven | 4,771.75 mi (7,679.39 km) |
| Hillsborough to Plovdiv | 4,829.03 mi (7,771.57 km) |
| Hillsborough to Pomorie | 4,927.24 mi (7,929.63 km) |
