| Porto de Mos to Oakley (California) | 5,597.00 mi (9,007.50 km) |
| Porto de Mos to Oakton (Virginia) | 3,570.25 mi (5,745.76 km) |
| Porto de Mos to Oakville (Missouri) | 4,211.41 mi (6,777.61 km) |
| Porto de Mos to Oatfield (Oregon) | 5,275.61 mi (8,490.27 km) |
| Porto de Mos to Ocala (Florida) | 4,128.63 mi (6,644.38 km) |
| Porto de Mos to Ocean Acres (New Jersey) | 3,398.55 mi (5,469.44 km) |
| Porto de Mos to Ocean City (New Jersey) | 3,426.91 mi (5,515.08 km) |
| Porto de Mos to Ocean Pines (Maryland) | 3,477.92 mi (5,597.17 km) |
| Porto de Mos to Ocean Pointe (Hawaii) | 7,782.60 mi (12,524.89 km) |
| Porto de Mos to Ocean Springs (Mississippi) | 4,421.86 mi (7,116.29 km) |
| Porto de Mos to Oceanside (California) | 5,642.93 mi (9,081.41 km) |
| Porto de Mos to Oceanside (New York) | 3,344.25 mi (5,382.05 km) |
| Porto de Mos to Ocoee (Florida) | 4,118.25 mi (6,627.68 km) |
| Porto de Mos to Oconomowoc (Wisconsin) | 3,977.28 mi (6,400.81 km) |
| Porto de Mos to Odenton (Maryland) | 3,535.43 mi (5,689.73 km) |
