| Pottstown to Opwijk | 3,735.90 mi (6,012.34 km) |
| Pottstown to Ostend | 3,678.31 mi (5,919.66 km) |
| Pottstown to Oud-Heverlee | 3,758.88 mi (6,049.33 km) |
| Pottstown to Oud-Turnhout | 3,758.97 mi (6,049.47 km) |
| Pottstown to Oudenaarde | 3,715.29 mi (5,979.18 km) |
| Pottstown to Oudenburg | 3,682.62 mi (5,926.60 km) |
| Pottstown to Oupeye | 3,801.58 mi (6,118.06 km) |
| Pottstown to Overijse | 3,754.80 mi (6,042.77 km) |
| Pottstown to Overpelt | 3,778.92 mi (6,081.59 km) |
| Pottstown to Paal | 3,773.84 mi (6,073.41 km) |
| Pottstown to Peer | 3,782.62 mi (6,087.54 km) |
| Pottstown to Pepinster | 3,812.42 mi (6,135.49 km) |
| Pottstown to Peruwelz | 3,723.14 mi (5,991.82 km) |
| Pottstown to Perwez | 3,770.39 mi (6,067.85 km) |
| Pottstown to Philippeville | 3,770.87 mi (6,068.62 km) |
