| Penafiel to Oakley (California) | 5,542.39 mi (8,919.62 km) |
| Penafiel to Oakton (Virginia) | 3,554.46 mi (5,720.36 km) |
| Penafiel to Oakville (Missouri) | 4,185.43 mi (6,735.80 km) |
| Penafiel to Oatfield (Oregon) | 5,210.99 mi (8,386.28 km) |
| Penafiel to Ocala (Florida) | 4,128.71 mi (6,644.51 km) |
| Penafiel to Ocean Acres (New Jersey) | 3,383.22 mi (5,444.77 km) |
| Penafiel to Ocean City (New Jersey) | 3,412.46 mi (5,491.82 km) |
| Penafiel to Ocean Pines (Maryland) | 3,465.10 mi (5,576.55 km) |
| Penafiel to Ocean Pointe (Hawaii) | 7,701.62 mi (12,394.56 km) |
| Penafiel to Ocean Springs (Mississippi) | 4,412.55 mi (7,101.31 km) |
| Penafiel to Oceanside (California) | 5,599.09 mi (9,010.86 km) |
| Penafiel to Oceanside (New York) | 3,327.26 mi (5,354.71 km) |
| Penafiel to Ocoee (Florida) | 4,120.16 mi (6,630.76 km) |
| Penafiel to Oconomowoc (Wisconsin) | 3,943.62 mi (6,346.64 km) |
| Penafiel to Odenton (Maryland) | 3,519.74 mi (5,664.48 km) |
