| Wauwatosa to Odenton (Maryland) | 651.38 mi (1,048.30 km) |
| Wauwatosa to Odessa (Texas) | 1,098.20 mi (1,767.38 km) |
| Wauwatosa to Ogden (Utah) | 1,228.42 mi (1,976.95 km) |
| Wauwatosa to Oildale (California) | 1,729.00 mi (2,782.55 km) |
| Wauwatosa to Ojus (Florida) | 1,262.56 mi (2,031.89 km) |
| Wauwatosa to Okemos (Michigan) | 184.96 mi (297.66 km) |
| Wauwatosa to Oklahoma City (Oklahoma) | 728.73 mi (1,172.78 km) |
| Wauwatosa to Okmulgee (Oklahoma) | 667.41 mi (1,074.09 km) |
| Wauwatosa to Olathe (Kansas) | 456.50 mi (734.67 km) |
| Wauwatosa to Old Jamestown (Missouri) | 314.43 mi (506.03 km) |
| Wauwatosa to Oldsmar (Florida) | 1,079.49 mi (1,737.27 km) |
| Wauwatosa to Olean (New York) | 492.99 mi (793.39 km) |
| Wauwatosa to Olive Branch (Mississippi) | 568.05 mi (914.19 km) |
| Wauwatosa to Olivehurst (California) | 1,755.73 mi (2,825.58 km) |
| Wauwatosa to Olney (Maryland) | 630.96 mi (1,015.44 km) |
