| Oliveira de Frades to Oswego (Illinois) | 4,004.24 mi (6,444.20 km) |
| Oliveira de Frades to Oswego (New York) | 3,407.23 mi (5,483.40 km) |
| Oliveira de Frades to Otsego (Minnesota) | 4,118.86 mi (6,628.67 km) |
| Oliveira de Frades to Ottawa (Illinois) | 4,037.27 mi (6,497.36 km) |
| Oliveira de Frades to Ottawa (Kansas) | 4,427.40 mi (7,125.22 km) |
| Oliveira de Frades to Ottumwa (Iowa) | 4,211.26 mi (6,777.37 km) |
| Oliveira de Frades to Overland (Missouri) | 4,199.07 mi (6,757.75 km) |
| Oliveira de Frades to Overland Park (Kansas) | 4,390.53 mi (7,065.87 km) |
| Oliveira de Frades to Overlea (Maryland) | 3,519.91 mi (5,664.76 km) |
| Oliveira de Frades to Oviedo (Florida) | 4,112.37 mi (6,618.22 km) |
| Oliveira de Frades to Owasso (Oklahoma) | 4,541.04 mi (7,308.09 km) |
| Oliveira de Frades to Owatonna (Minnesota) | 4,141.58 mi (6,665.24 km) |
| Oliveira de Frades to Owensboro (Kentucky) | 4,079.23 mi (6,564.89 km) |
| Oliveira de Frades to Owings Mills (Maryland) | 3,531.80 mi (5,683.88 km) |
| Oliveira de Frades to Owosso (Michigan) | 3,773.74 mi (6,073.24 km) |
