| Povoa de Varzim to Oakley (California) | 5,516.04 mi (8,877.21 km) |
| Povoa de Varzim to Oakton (Virginia) | 3,527.03 mi (5,676.20 km) |
| Povoa de Varzim to Oakville (Missouri) | 4,157.92 mi (6,691.52 km) |
| Povoa de Varzim to Oatfield (Oregon) | 5,185.58 mi (8,345.39 km) |
| Povoa de Varzim to Ocala (Florida) | 4,101.81 mi (6,601.23 km) |
| Povoa de Varzim to Ocean Acres (New Jersey) | 3,355.80 mi (5,400.63 km) |
| Povoa de Varzim to Ocean City (New Jersey) | 3,385.05 mi (5,447.71 km) |
| Povoa de Varzim to Ocean Pines (Maryland) | 3,437.74 mi (5,532.50 km) |
| Povoa de Varzim to Ocean Pointe (Hawaii) | 7,678.70 mi (12,357.67 km) |
| Povoa de Varzim to Ocean Springs (Mississippi) | 4,385.26 mi (7,057.40 km) |
| Povoa de Varzim to Oceanside (California) | 5,572.05 mi (8,967.35 km) |
| Povoa de Varzim to Oceanside (New York) | 3,299.81 mi (5,310.52 km) |
| Povoa de Varzim to Ocoee (Florida) | 4,093.37 mi (6,587.64 km) |
| Povoa de Varzim to Oconomowoc (Wisconsin) | 3,916.20 mi (6,302.52 km) |
| Povoa de Varzim to Odenton (Maryland) | 3,492.31 mi (5,620.33 km) |
