| Wauwatosa to Nuth | 4,152.34 mi (6,682.55 km) |
| Wauwatosa to Oegstgeest | 4,054.33 mi (6,524.81 km) |
| Wauwatosa to Oirschot | 4,109.41 mi (6,613.45 km) |
| Wauwatosa to Oisterwijk | 4,102.71 mi (6,602.67 km) |
| Wauwatosa to Oldebroek | 4,096.18 mi (6,592.17 km) |
| Wauwatosa to Oldenzaal | 4,137.92 mi (6,659.34 km) |
| Wauwatosa to Ommen | 4,112.13 mi (6,617.84 km) |
| Wauwatosa to Oosterend | 4,081.86 mi (6,569.12 km) |
| Wauwatosa to Oosterhout | 4,088.03 mi (6,579.05 km) |
| Wauwatosa to Oosterwolde | 4,090.29 mi (6,582.68 km) |
| Wauwatosa to Oostzaan | 4,060.36 mi (6,534.52 km) |
| Wauwatosa to Opmeer | 4,053.16 mi (6,522.94 km) |
| Wauwatosa to Oss | 4,107.47 mi (6,610.34 km) |
| Wauwatosa to Oud-Beijerland | 4,065.09 mi (6,542.13 km) |
| Wauwatosa to Oudenbosch | 4,077.84 mi (6,562.64 km) |
