| Irondale to Opwijk | 4,495.95 mi (7,235.54 km) |
| Irondale to Ostend | 4,438.45 mi (7,143.00 km) |
| Irondale to Oud-Heverlee | 4,518.94 mi (7,272.54 km) |
| Irondale to Oud-Turnhout | 4,518.17 mi (7,271.29 km) |
| Irondale to Oudenaarde | 4,475.73 mi (7,202.98 km) |
| Irondale to Oudenburg | 4,442.80 mi (7,149.99 km) |
| Irondale to Oupeye | 4,561.44 mi (7,340.93 km) |
| Irondale to Overijse | 4,514.99 mi (7,266.17 km) |
| Irondale to Overpelt | 4,538.10 mi (7,303.37 km) |
| Irondale to Paal | 4,533.40 mi (7,295.80 km) |
| Irondale to Peer | 4,541.91 mi (7,309.51 km) |
| Irondale to Pepinster | 4,572.41 mi (7,358.58 km) |
| Irondale to Peruwelz | 4,484.03 mi (7,216.35 km) |
| Irondale to Perwez | 4,530.69 mi (7,291.44 km) |
| Irondale to Philippeville | 4,531.83 mi (7,293.28 km) |
