| Glenmont to Opwijk | 3,845.62 mi (6,188.92 km) |
| Glenmont to Ostend | 3,788.01 mi (6,096.22 km) |
| Glenmont to Oud-Heverlee | 3,868.60 mi (6,225.91 km) |
| Glenmont to Oud-Turnhout | 3,868.83 mi (6,226.28 km) |
| Glenmont to Oudenaarde | 3,824.94 mi (6,155.64 km) |
| Glenmont to Oudenburg | 3,792.32 mi (6,103.15 km) |
| Glenmont to Oupeye | 3,911.34 mi (6,294.69 km) |
| Glenmont to Overijse | 3,864.50 mi (6,219.31 km) |
| Glenmont to Overpelt | 3,888.79 mi (6,258.40 km) |
| Glenmont to Paal | 3,883.65 mi (6,250.12 km) |
| Glenmont to Peer | 3,892.47 mi (6,264.32 km) |
| Glenmont to Pepinster | 3,922.14 mi (6,312.08 km) |
| Glenmont to Peruwelz | 3,832.70 mi (6,168.13 km) |
| Glenmont to Perwez | 3,880.06 mi (6,244.35 km) |
| Glenmont to Philippeville | 3,880.40 mi (6,244.90 km) |
