| Menomonee Falls to Olympia Heights (Florida) | 1,281.57 mi (2,062.49 km) |
| Menomonee Falls to Omaha (Nebraska) | 426.07 mi (685.70 km) |
| Menomonee Falls to On Top of the World Designated Place (Florida) | 1,022.78 mi (1,646.01 km) |
| Menomonee Falls to Onalaska (Wisconsin) | 162.77 mi (261.96 km) |
| Menomonee Falls to Oneida (New York) | 627.93 mi (1,010.56 km) |
| Menomonee Falls to Oneonta (New York) | 662.93 mi (1,066.88 km) |
| Menomonee Falls to Ontario (California) | 1,701.05 mi (2,737.58 km) |
| Menomonee Falls to Ontario (Oregon) | 1,437.88 mi (2,314.04 km) |
| Menomonee Falls to Opa-locka (Florida) | 1,271.68 mi (2,046.56 km) |
| Menomonee Falls to Opelika (Alabama) | 739.80 mi (1,190.59 km) |
| Menomonee Falls to Opelousas (Louisiana) | 898.96 mi (1,446.74 km) |
| Menomonee Falls to Orange (California) | 1,719.97 mi (2,768.02 km) |
| Menomonee Falls to Orange (Texas) | 952.15 mi (1,532.34 km) |
| Menomonee Falls to Orange City (Florida) | 1,052.75 mi (1,694.24 km) |
| Menomonee Falls to Orangeburg (South Carolina) | 773.73 mi (1,245.20 km) |
