| Estoril to Orangevale (California) | 5,564.51 mi (8,955.21 km) |
| Estoril to Orchards (Washington) | 5,286.32 mi (8,507.51 km) |
| Estoril to Orcutt (California) | 5,711.15 mi (9,191.21 km) |
| Estoril to Oregon (Ohio) | 3,788.54 mi (6,097.06 km) |
| Estoril to Oregon (Wisconsin) | 4,029.52 mi (6,484.89 km) |
| Estoril to Oregon City (Oregon) | 5,304.73 mi (8,537.14 km) |
| Estoril to Orem (Utah) | 5,104.75 mi (8,215.30 km) |
| Estoril to Orinda (California) | 5,640.55 mi (9,077.59 km) |
| Estoril to Orland Park (Illinois) | 3,998.12 mi (6,434.35 km) |
| Estoril to Orlando (Florida) | 4,095.95 mi (6,591.79 km) |
| Estoril to Ormond Beach (Florida) | 4,055.16 mi (6,526.15 km) |
| Estoril to Oro Valley (Arizona) | 5,409.03 mi (8,705.00 km) |
| Estoril to Oroville (California) | 5,539.89 mi (8,915.59 km) |
| Estoril to Oshkosh (Wisconsin) | 3,959.96 mi (6,372.94 km) |
| Estoril to Oskaloosa (Iowa) | 4,229.06 mi (6,806.01 km) |
