| Norridge to Opwijk | 4,131.84 mi (6,649.56 km) |
| Norridge to Ostend | 4,075.45 mi (6,558.81 km) |
| Norridge to Oud-Heverlee | 4,154.65 mi (6,686.26 km) |
| Norridge to Oud-Turnhout | 4,149.21 mi (6,677.51 km) |
| Norridge to Oudenaarde | 4,114.06 mi (6,620.94 km) |
| Norridge to Oudenburg | 4,079.94 mi (6,566.03 km) |
| Norridge to Oupeye | 4,195.57 mi (6,752.12 km) |
| Norridge to Overijse | 4,151.44 mi (6,681.10 km) |
| Norridge to Overpelt | 4,168.82 mi (6,709.06 km) |
| Norridge to Paal | 4,166.15 mi (6,704.77 km) |
| Norridge to Peer | 4,173.20 mi (6,716.11 km) |
| Norridge to Pepinster | 4,207.19 mi (6,770.82 km) |
| Norridge to Peruwelz | 4,125.12 mi (6,638.73 km) |
| Norridge to Perwez | 4,167.68 mi (6,707.23 km) |
| Norridge to Philippeville | 4,172.92 mi (6,715.66 km) |
