| Menomonee Falls to Oerlinghausen | 4,211.43 mi (6,777.64 km) |
| Menomonee Falls to Oestrich-Winkel | 4,264.02 mi (6,862.27 km) |
| Menomonee Falls to Offenburg | 4,322.09 mi (6,955.73 km) |
| Menomonee Falls to Oftersheim | 4,310.31 mi (6,936.78 km) |
| Menomonee Falls to Ohrdruf | 4,329.48 mi (6,967.62 km) |
| Menomonee Falls to Ohringen | 4,350.76 mi (7,001.87 km) |
| Menomonee Falls to Olbernhau | 4,427.45 mi (7,125.29 km) |
| Menomonee Falls to Olching | 4,458.44 mi (7,175.16 km) |
| Menomonee Falls to Oldenburg | 4,150.55 mi (6,679.67 km) |
| Menomonee Falls to Oldenburg in Holstein | 4,196.90 mi (6,754.26 km) |
| Menomonee Falls to Olfen | 4,175.44 mi (6,719.73 km) |
| Menomonee Falls to Olpe | 4,218.42 mi (6,788.89 km) |
| Menomonee Falls to Olsberg | 4,228.82 mi (6,805.64 km) |
| Menomonee Falls to Oranienburg | 4,337.54 mi (6,980.60 km) |
| Menomonee Falls to Ortenberg | 4,288.37 mi (6,901.46 km) |
