| Poplar Bluff to Nuth | 4,549.54 mi (7,321.77 km) |
| Poplar Bluff to Oegstgeest | 4,454.28 mi (7,168.47 km) |
| Poplar Bluff to Oirschot | 4,507.95 mi (7,254.84 km) |
| Poplar Bluff to Oisterwijk | 4,501.42 mi (7,244.33 km) |
| Poplar Bluff to Oldebroek | 4,498.92 mi (7,240.31 km) |
| Poplar Bluff to Oldenzaal | 4,541.50 mi (7,308.83 km) |
| Poplar Bluff to Ommen | 4,515.75 mi (7,267.40 km) |
| Poplar Bluff to Oosterend | 4,486.74 mi (7,220.71 km) |
| Poplar Bluff to Oosterhout | 4,486.50 mi (7,220.33 km) |
| Poplar Bluff to Oosterwolde | 4,495.40 mi (7,234.64 km) |
| Poplar Bluff to Oostzaan | 4,461.76 mi (7,180.51 km) |
| Poplar Bluff to Opmeer | 4,455.60 mi (7,170.60 km) |
| Poplar Bluff to Oss | 4,507.27 mi (7,253.75 km) |
| Poplar Bluff to Oud-Beijerland | 4,463.61 mi (7,183.48 km) |
| Poplar Bluff to Oudenbosch | 4,475.67 mi (7,202.90 km) |
