| Calverton to Opwijk | 3,842.20 mi (6,183.43 km) |
| Calverton to Ostend | 3,784.59 mi (6,090.72 km) |
| Calverton to Oud-Heverlee | 3,865.18 mi (6,220.41 km) |
| Calverton to Oud-Turnhout | 3,865.46 mi (6,220.85 km) |
| Calverton to Oudenaarde | 3,821.50 mi (6,150.11 km) |
| Calverton to Oudenburg | 3,788.90 mi (6,097.64 km) |
| Calverton to Oupeye | 3,907.93 mi (6,289.21 km) |
| Calverton to Overijse | 3,861.07 mi (6,213.80 km) |
| Calverton to Overpelt | 3,885.42 mi (6,252.97 km) |
| Calverton to Paal | 3,880.26 mi (6,244.67 km) |
| Calverton to Peer | 3,889.09 mi (6,258.89 km) |
| Calverton to Pepinster | 3,918.73 mi (6,306.59 km) |
| Calverton to Peruwelz | 3,829.23 mi (6,162.55 km) |
| Calverton to Perwez | 3,876.63 mi (6,238.83 km) |
| Calverton to Philippeville | 3,876.93 mi (6,239.32 km) |
