| Portlethen to Orangevale (California) | 4,936.25 mi (7,944.12 km) |
| Portlethen to Orchards (Washington) | 4,553.30 mi (7,327.82 km) |
| Portlethen to Orcutt (California) | 5,142.87 mi (8,276.64 km) |
| Portlethen to Oregon (Ohio) | 3,574.98 mi (5,753.37 km) |
| Portlethen to Oregon (Wisconsin) | 3,717.22 mi (5,982.29 km) |
| Portlethen to Oregon City (Oregon) | 4,575.42 mi (7,363.43 km) |
| Portlethen to Orem (Utah) | 4,572.48 mi (7,358.70 km) |
| Portlethen to Orinda (California) | 5,010.48 mi (8,063.59 km) |
| Portlethen to Orland Park (Illinois) | 3,732.24 mi (6,006.46 km) |
| Portlethen to Orlando (Florida) | 4,192.68 mi (6,747.46 km) |
| Portlethen to Ormond Beach (Florida) | 4,139.16 mi (6,661.34 km) |
| Portlethen to Oro Valley (Arizona) | 5,005.23 mi (8,055.14 km) |
| Portlethen to Oroville (California) | 4,896.92 mi (7,880.83 km) |
| Portlethen to Oshkosh (Wisconsin) | 3,633.37 mi (5,847.34 km) |
| Portlethen to Oskaloosa (Iowa) | 3,912.10 mi (6,295.92 km) |
