| Wauwatosa to Orangeburg (South Carolina) | 766.27 mi (1,233.19 km) |
| Wauwatosa to Orangevale (California) | 1,748.17 mi (2,813.40 km) |
| Wauwatosa to Orchards (Washington) | 1,699.97 mi (2,735.83 km) |
| Wauwatosa to Orcutt (California) | 1,816.60 mi (2,923.54 km) |
| Wauwatosa to Oregon (Ohio) | 254.32 mi (409.29 km) |
| Wauwatosa to Oregon (Wisconsin) | 69.10 mi (111.20 km) |
| Wauwatosa to Oregon City (Oregon) | 1,705.76 mi (2,745.15 km) |
| Wauwatosa to Orem (Utah) | 1,231.81 mi (1,982.40 km) |
| Wauwatosa to Orinda (California) | 1,816.93 mi (2,924.06 km) |
| Wauwatosa to Orland Park (Illinois) | 100.86 mi (162.31 km) |
| Wauwatosa to Orlando (Florida) | 1,074.42 mi (1,729.12 km) |
| Wauwatosa to Ormond Beach (Florida) | 1,025.60 mi (1,650.54 km) |
| Wauwatosa to Oro Valley (Arizona) | 1,446.10 mi (2,327.27 km) |
| Wauwatosa to Oroville (California) | 1,746.39 mi (2,810.54 km) |
| Wauwatosa to Oshkosh (Wisconsin) | 71.46 mi (115.01 km) |
