| Estoril to Oakley (California) | 5,616.04 mi (9,038.14 km) |
| Estoril to Oakton (Virginia) | 3,565.63 mi (5,738.33 km) |
| Estoril to Oakville (Missouri) | 4,212.71 mi (6,779.70 km) |
| Estoril to Oatfield (Oregon) | 5,301.49 mi (8,531.92 km) |
| Estoril to Ocala (Florida) | 4,114.13 mi (6,621.05 km) |
| Estoril to Ocean Acres (New Jersey) | 3,393.78 mi (5,461.76 km) |
| Estoril to Ocean City (New Jersey) | 3,421.58 mi (5,506.50 km) |
| Estoril to Ocean Pines (Maryland) | 3,471.56 mi (5,586.94 km) |
| Estoril to Ocean Pointe (Hawaii) | 7,819.24 mi (12,583.86 km) |
| Estoril to Ocean Springs (Mississippi) | 4,412.82 mi (7,101.75 km) |
| Estoril to Oceanside (California) | 5,654.90 mi (9,100.68 km) |
| Estoril to Oceanside (New York) | 3,340.52 mi (5,376.06 km) |
| Estoril to Ocoee (Florida) | 4,102.66 mi (6,602.59 km) |
| Estoril to Oconomowoc (Wisconsin) | 3,983.51 mi (6,410.83 km) |
| Estoril to Odenton (Maryland) | 3,530.78 mi (5,682.24 km) |
