| Povoa de Santa Iria to Oakley (California) | 5,621.73 mi (9,047.30 km) |
| Povoa de Santa Iria to Oakton (Virginia) | 3,577.68 mi (5,757.72 km) |
| Povoa de Santa Iria to Oakville (Missouri) | 4,223.30 mi (6,796.74 km) |
| Povoa de Santa Iria to Oatfield (Oregon) | 5,305.06 mi (8,537.66 km) |
| Povoa de Santa Iria to Ocala (Florida) | 4,128.51 mi (6,644.19 km) |
| Povoa de Santa Iria to Ocean Acres (New Jersey) | 3,405.86 mi (5,481.20 km) |
| Povoa de Santa Iria to Ocean City (New Jersey) | 3,433.80 mi (5,526.16 km) |
| Povoa de Santa Iria to Ocean Pines (Maryland) | 3,484.03 mi (5,607.01 km) |
| Povoa de Santa Iria to Ocean Pointe (Hawaii) | 7,819.28 mi (12,583.91 km) |
| Povoa de Santa Iria to Ocean Springs (Mississippi) | 4,425.97 mi (7,122.91 km) |
| Povoa de Santa Iria to Oceanside (California) | 5,662.65 mi (9,113.16 km) |
| Povoa de Santa Iria to Oceanside (New York) | 3,352.34 mi (5,395.08 km) |
| Povoa de Santa Iria to Ocoee (Florida) | 4,117.28 mi (6,626.12 km) |
| Povoa de Santa Iria to Oconomowoc (Wisconsin) | 3,992.79 mi (6,425.77 km) |
| Povoa de Santa Iria to Odenton (Maryland) | 3,542.84 mi (5,701.65 km) |
