| Madison to Opwijk | 4,136.97 mi (6,657.82 km) |
| Madison to Ostend | 4,081.01 mi (6,567.75 km) |
| Madison to Oud-Heverlee | 4,159.68 mi (6,694.35 km) |
| Madison to Oud-Turnhout | 4,153.08 mi (6,683.74 km) |
| Madison to Oudenaarde | 4,119.85 mi (6,630.25 km) |
| Madison to Oudenburg | 4,085.52 mi (6,575.02 km) |
| Madison to Oupeye | 4,200.10 mi (6,759.41 km) |
| Madison to Overijse | 4,156.66 mi (6,689.50 km) |
| Madison to Overpelt | 4,172.56 mi (6,715.09 km) |
| Madison to Paal | 4,170.41 mi (6,711.62 km) |
| Madison to Peer | 4,177.07 mi (6,722.35 km) |
| Madison to Pepinster | 4,211.85 mi (6,778.32 km) |
| Madison to Peruwelz | 4,131.56 mi (6,649.10 km) |
| Madison to Perwez | 4,172.99 mi (6,715.78 km) |
| Madison to Philippeville | 4,179.23 mi (6,725.82 km) |
