| Buffalo Grove to Nuth | 4,192.29 mi (6,746.84 km) |
| Buffalo Grove to Oegstgeest | 4,094.86 mi (6,590.05 km) |
| Buffalo Grove to Oirschot | 4,149.64 mi (6,678.21 km) |
| Buffalo Grove to Oisterwijk | 4,142.98 mi (6,667.49 km) |
| Buffalo Grove to Oldebroek | 4,137.36 mi (6,658.44 km) |
| Buffalo Grove to Oldenzaal | 4,179.31 mi (6,725.94 km) |
| Buffalo Grove to Ommen | 4,153.52 mi (6,684.45 km) |
| Buffalo Grove to Oosterend | 4,123.53 mi (6,636.18 km) |
| Buffalo Grove to Oosterhout | 4,128.25 mi (6,643.77 km) |
| Buffalo Grove to Oosterwolde | 4,132.01 mi (6,649.83 km) |
| Buffalo Grove to Oostzaan | 4,101.23 mi (6,600.29 km) |
| Buffalo Grove to Opmeer | 4,094.26 mi (6,589.08 km) |
| Buffalo Grove to Oss | 4,147.99 mi (6,675.55 km) |
| Buffalo Grove to Oud-Beijerland | 4,105.31 mi (6,606.86 km) |
| Buffalo Grove to Oudenbosch | 4,117.91 mi (6,627.13 km) |
