| Okmulgee to Opwijk | 4,753.08 mi (7,649.34 km) |
| Okmulgee to Ostend | 4,696.72 mi (7,558.64 km) |
| Okmulgee to Oud-Heverlee | 4,775.88 mi (7,686.03 km) |
| Okmulgee to Oud-Turnhout | 4,770.29 mi (7,677.05 km) |
| Okmulgee to Oudenaarde | 4,735.35 mi (7,620.80 km) |
| Okmulgee to Oudenburg | 4,701.21 mi (7,565.87 km) |
| Okmulgee to Oupeye | 4,816.75 mi (7,751.81 km) |
| Okmulgee to Overijse | 4,772.69 mi (7,680.90 km) |
| Okmulgee to Overpelt | 4,789.88 mi (7,708.57 km) |
| Okmulgee to Paal | 4,787.29 mi (7,704.40 km) |
| Okmulgee to Peer | 4,794.28 mi (7,715.66 km) |
| Okmulgee to Pepinster | 4,828.38 mi (7,770.53 km) |
| Okmulgee to Peruwelz | 4,746.43 mi (7,638.65 km) |
| Okmulgee to Perwez | 4,788.93 mi (7,707.04 km) |
| Okmulgee to Philippeville | 4,794.23 mi (7,715.57 km) |
