| Towson to Opwijk | 3,813.63 mi (6,137.45 km) |
| Towson to Ostend | 3,756.03 mi (6,044.74 km) |
| Towson to Oud-Heverlee | 3,836.61 mi (6,174.43 km) |
| Towson to Oud-Turnhout | 3,836.82 mi (6,174.77 km) |
| Towson to Oudenaarde | 3,792.96 mi (6,104.18 km) |
| Towson to Oudenburg | 3,760.33 mi (6,051.67 km) |
| Towson to Oupeye | 3,879.35 mi (6,243.20 km) |
| Towson to Overijse | 3,832.51 mi (6,167.83 km) |
| Towson to Overpelt | 3,856.78 mi (6,206.89 km) |
| Towson to Paal | 3,851.65 mi (6,198.63 km) |
| Towson to Peer | 3,860.46 mi (6,212.82 km) |
| Towson to Pepinster | 3,890.16 mi (6,260.60 km) |
| Towson to Peruwelz | 3,800.73 mi (6,116.69 km) |
| Towson to Perwez | 3,848.08 mi (6,192.89 km) |
| Towson to Philippeville | 3,848.44 mi (6,193.47 km) |
