| Porto de Mos to Orangevale (California) | 5,545.18 mi (8,924.10 km) |
| Porto de Mos to Orchards (Washington) | 5,260.25 mi (8,465.55 km) |
| Porto de Mos to Orcutt (California) | 5,695.64 mi (9,166.24 km) |
| Porto de Mos to Oregon (Ohio) | 3,786.50 mi (6,093.78 km) |
| Porto de Mos to Oregon (Wisconsin) | 4,023.12 mi (6,474.58 km) |
| Porto de Mos to Oregon City (Oregon) | 5,278.92 mi (8,495.59 km) |
| Porto de Mos to Orem (Utah) | 5,089.70 mi (8,191.08 km) |
| Porto de Mos to Orinda (California) | 5,621.30 mi (9,046.61 km) |
| Porto de Mos to Orland Park (Illinois) | 3,994.10 mi (6,427.88 km) |
| Porto de Mos to Orlando (Florida) | 4,111.78 mi (6,617.27 km) |
| Porto de Mos to Ormond Beach (Florida) | 4,070.16 mi (6,550.29 km) |
| Porto de Mos to Oro Valley (Arizona) | 5,402.01 mi (8,693.70 km) |
| Porto de Mos to Oroville (California) | 5,519.65 mi (8,883.02 km) |
| Porto de Mos to Oshkosh (Wisconsin) | 3,952.51 mi (6,360.94 km) |
| Porto de Mos to Oskaloosa (Iowa) | 4,223.13 mi (6,796.48 km) |
