| Poplar Bluff to Opwijk | 4,482.95 mi (7,214.60 km) |
| Poplar Bluff to Ostend | 4,426.06 mi (7,123.06 km) |
| Poplar Bluff to Oud-Heverlee | 4,505.86 mi (7,251.48 km) |
| Poplar Bluff to Oud-Turnhout | 4,502.01 mi (7,245.29 km) |
| Poplar Bluff to Oudenaarde | 4,464.28 mi (7,184.56 km) |
| Poplar Bluff to Oudenburg | 4,430.51 mi (7,130.21 km) |
| Poplar Bluff to Oupeye | 4,547.41 mi (7,318.34 km) |
| Poplar Bluff to Overijse | 4,502.39 mi (7,245.89 km) |
| Poplar Bluff to Overpelt | 4,521.77 mi (7,277.08 km) |
| Poplar Bluff to Paal | 4,518.40 mi (7,271.66 km) |
| Poplar Bluff to Peer | 4,525.96 mi (7,283.83 km) |
| Poplar Bluff to Pepinster | 4,558.82 mi (7,336.72 km) |
| Poplar Bluff to Peruwelz | 4,474.40 mi (7,200.85 km) |
| Poplar Bluff to Perwez | 4,518.47 mi (7,271.78 km) |
| Poplar Bluff to Philippeville | 4,522.29 mi (7,277.92 km) |
