| Povoa de Varzim to Orangevale (California) | 5,463.84 mi (8,793.19 km) |
| Povoa de Varzim to Orchards (Washington) | 5,169.97 mi (8,320.26 km) |
| Povoa de Varzim to Orcutt (California) | 5,619.59 mi (9,043.86 km) |
| Povoa de Varzim to Oregon (Ohio) | 3,732.18 mi (6,006.37 km) |
| Povoa de Varzim to Oregon (Wisconsin) | 3,961.72 mi (6,375.77 km) |
| Povoa de Varzim to Oregon City (Oregon) | 5,188.97 mi (8,350.83 km) |
| Povoa de Varzim to Orem (Utah) | 5,014.66 mi (8,070.31 km) |
| Povoa de Varzim to Orinda (California) | 5,540.04 mi (8,915.83 km) |
| Povoa de Varzim to Orland Park (Illinois) | 3,936.46 mi (6,335.12 km) |
| Povoa de Varzim to Orlando (Florida) | 4,087.34 mi (6,577.93 km) |
| Povoa de Varzim to Ormond Beach (Florida) | 4,044.29 mi (6,508.65 km) |
| Povoa de Varzim to Oro Valley (Arizona) | 5,338.71 mi (8,591.83 km) |
| Povoa de Varzim to Oroville (California) | 5,437.06 mi (8,750.11 km) |
| Povoa de Varzim to Oshkosh (Wisconsin) | 3,889.56 mi (6,259.64 km) |
| Povoa de Varzim to Oskaloosa (Iowa) | 4,162.33 mi (6,698.63 km) |
