| Oliveira de Frades to Odessa (Texas) | 5,021.27 mi (8,080.95 km) |
| Oliveira de Frades to Ogden (Utah) | 5,036.71 mi (8,105.81 km) |
| Oliveira de Frades to Oildale (California) | 5,588.84 mi (8,994.37 km) |
| Oliveira de Frades to Ojus (Florida) | 4,162.22 mi (6,698.45 km) |
| Oliveira de Frades to Okemos (Michigan) | 3,793.27 mi (6,104.67 km) |
| Oliveira de Frades to Oklahoma City (Oklahoma) | 4,650.78 mi (7,484.71 km) |
| Oliveira de Frades to Okmulgee (Oklahoma) | 4,575.23 mi (7,363.12 km) |
| Oliveira de Frades to Olathe (Kansas) | 4,396.71 mi (7,075.82 km) |
| Oliveira de Frades to Old Jamestown (Missouri) | 4,190.14 mi (6,743.38 km) |
| Oliveira de Frades to Oldsmar (Florida) | 4,210.82 mi (6,776.66 km) |
| Oliveira de Frades to Olean (New York) | 3,534.14 mi (5,687.64 km) |
| Oliveira de Frades to Olive Branch (Mississippi) | 4,308.94 mi (6,934.57 km) |
| Oliveira de Frades to Olivehurst (California) | 5,510.76 mi (8,868.71 km) |
| Oliveira de Frades to Olney (Maryland) | 3,553.14 mi (5,718.22 km) |
| Oliveira de Frades to Olympia (Washington) | 5,171.16 mi (8,322.18 km) |
