| Ardea to Orangevale (California) | 6,173.04 mi (9,934.55 km) |
| Ardea to Orchards (Washington) | 5,800.23 mi (9,334.57 km) |
| Ardea to Orcutt (California) | 6,370.50 mi (10,252.33 km) |
| Ardea to Oregon (Ohio) | 4,661.67 mi (7,502.23 km) |
| Ardea to Oregon (Wisconsin) | 4,848.98 mi (7,803.68 km) |
| Ardea to Oregon City (Oregon) | 5,822.15 mi (9,369.85 km) |
| Ardea to Orem (Utah) | 5,787.45 mi (9,314.00 km) |
| Ardea to Orinda (California) | 6,247.97 mi (10,055.14 km) |
| Ardea to Orland Park (Illinois) | 4,845.10 mi (7,797.44 km) |
| Ardea to Orlando (Florida) | 5,127.37 mi (8,251.70 km) |
| Ardea to Ormond Beach (Florida) | 5,080.55 mi (8,176.36 km) |
| Ardea to Oro Valley (Arizona) | 6,188.67 mi (9,959.70 km) |
| Ardea to Oroville (California) | 6,135.66 mi (9,874.39 km) |
| Ardea to Oshkosh (Wisconsin) | 4,769.26 mi (7,675.39 km) |
| Ardea to Oskaloosa (Iowa) | 5,049.14 mi (8,125.81 km) |
