| Hagerstown to Opwijk | 3,846.96 mi (6,191.08 km) |
| Hagerstown to Ostend | 3,789.41 mi (6,098.47 km) |
| Hagerstown to Oud-Heverlee | 3,869.95 mi (6,228.08 km) |
| Hagerstown to Oud-Turnhout | 3,869.59 mi (6,227.50 km) |
| Hagerstown to Oudenaarde | 3,826.55 mi (6,158.24 km) |
| Hagerstown to Oudenburg | 3,793.74 mi (6,105.43 km) |
| Hagerstown to Oupeye | 3,912.54 mi (6,296.63 km) |
| Hagerstown to Overijse | 3,865.93 mi (6,221.62 km) |
| Hagerstown to Overpelt | 3,889.53 mi (6,259.60 km) |
| Hagerstown to Paal | 3,884.64 mi (6,251.73 km) |
| Hagerstown to Peer | 3,893.29 mi (6,265.64 km) |
| Hagerstown to Pepinster | 3,923.45 mi (6,314.18 km) |
| Hagerstown to Peruwelz | 3,834.67 mi (6,171.30 km) |
| Hagerstown to Perwez | 3,881.58 mi (6,246.80 km) |
| Hagerstown to Philippeville | 3,882.44 mi (6,248.18 km) |
