| Hillsboro to Opwijk | 5,061.71 mi (8,146.04 km) |
| Hillsboro to Ostend | 5,014.93 mi (8,070.75 km) |
| Hillsboro to Oud-Heverlee | 5,081.45 mi (8,177.81 km) |
| Hillsboro to Oud-Turnhout | 5,062.14 mi (8,146.72 km) |
| Hillsboro to Oudenaarde | 5,053.36 mi (8,132.60 km) |
| Hillsboro to Oudenburg | 5,019.37 mi (8,077.89 km) |
| Hillsboro to Oupeye | 5,113.02 mi (8,228.61 km) |
| Hillsboro to Overijse | 5,080.89 mi (8,176.91 km) |
| Hillsboro to Overpelt | 5,078.56 mi (8,173.16 km) |
| Hillsboro to Paal | 5,082.54 mi (8,179.56 km) |
| Hillsboro to Peer | 5,084.23 mi (8,182.28 km) |
| Hillsboro to Pepinster | 5,125.40 mi (8,248.53 km) |
| Hillsboro to Peruwelz | 5,071.56 mi (8,161.89 km) |
| Hillsboro to Perwez | 5,097.00 mi (8,202.82 km) |
| Hillsboro to Philippeville | 5,114.18 mi (8,230.47 km) |
