| North Decatur to Opwijk | 4,387.62 mi (7,061.19 km) |
| North Decatur to Ostend | 4,330.02 mi (6,968.50 km) |
| North Decatur to Oud-Heverlee | 4,410.60 mi (7,098.17 km) |
| North Decatur to Oud-Turnhout | 4,410.69 mi (7,098.31 km) |
| North Decatur to Oudenaarde | 4,366.98 mi (7,027.98 km) |
| North Decatur to Oudenburg | 4,334.33 mi (6,975.43 km) |
| North Decatur to Oupeye | 4,453.31 mi (7,166.91 km) |
| North Decatur to Overijse | 4,406.51 mi (7,091.60 km) |
| North Decatur to Overpelt | 4,430.64 mi (7,130.43 km) |
| North Decatur to Paal | 4,425.57 mi (7,122.26 km) |
| North Decatur to Peer | 4,434.34 mi (7,136.39 km) |
| North Decatur to Pepinster | 4,464.14 mi (7,184.33 km) |
| North Decatur to Peruwelz | 4,374.78 mi (7,040.53 km) |
| North Decatur to Perwez | 4,422.09 mi (7,116.67 km) |
| North Decatur to Philippeville | 4,422.49 mi (7,117.31 km) |
