| Povoa de Varzim to Odessa (Texas) | 4,973.54 mi (8,004.14 km) |
| Povoa de Varzim to Ogden (Utah) | 4,984.22 mi (8,021.33 km) |
| Povoa de Varzim to Oildale (California) | 5,536.52 mi (8,910.17 km) |
| Povoa de Varzim to Ojus (Florida) | 4,124.90 mi (6,638.38 km) |
| Povoa de Varzim to Okemos (Michigan) | 3,744.75 mi (6,026.60 km) |
| Povoa de Varzim to Oklahoma City (Oklahoma) | 4,602.81 mi (7,407.51 km) |
| Povoa de Varzim to Okmulgee (Oklahoma) | 4,527.55 mi (7,286.39 km) |
| Povoa de Varzim to Olathe (Kansas) | 4,347.92 mi (6,997.30 km) |
| Povoa de Varzim to Old Jamestown (Missouri) | 4,142.32 mi (6,666.43 km) |
| Povoa de Varzim to Oldsmar (Florida) | 4,171.16 mi (6,712.83 km) |
| Povoa de Varzim to Olean (New York) | 3,487.05 mi (5,611.87 km) |
| Povoa de Varzim to Olive Branch (Mississippi) | 4,263.10 mi (6,860.80 km) |
| Povoa de Varzim to Olivehurst (California) | 5,457.41 mi (8,782.85 km) |
| Povoa de Varzim to Olney (Maryland) | 3,508.12 mi (5,645.78 km) |
| Povoa de Varzim to Olympia (Washington) | 5,116.72 mi (8,234.56 km) |
