| Ardea to Oakley (California) | 6,227.36 mi (10,021.97 km) |
| Ardea to Oakton (Virginia) | 4,509.19 mi (7,256.85 km) |
| Ardea to Oakville (Missouri) | 5,084.40 mi (8,182.54 km) |
| Ardea to Oatfield (Oregon) | 5,818.05 mi (9,363.25 km) |
| Ardea to Ocala (Florida) | 5,134.91 mi (8,263.84 km) |
| Ardea to Ocean Acres (New Jersey) | 4,342.16 mi (6,988.04 km) |
| Ardea to Ocean City (New Jersey) | 4,374.45 mi (7,040.00 km) |
| Ardea to Ocean Pines (Maryland) | 4,432.73 mi (7,133.79 km) |
| Ardea to Ocean Pointe (Hawaii) | 8,047.02 mi (12,950.42 km) |
| Ardea to Ocean Springs (Mississippi) | 5,383.16 mi (8,663.35 km) |
| Ardea to Oceanside (California) | 6,364.54 mi (10,242.74 km) |
| Ardea to Oceanside (New York) | 4,280.38 mi (6,888.60 km) |
| Ardea to Ocoee (Florida) | 5,132.13 mi (8,259.36 km) |
| Ardea to Oconomowoc (Wisconsin) | 4,806.19 mi (7,734.82 km) |
| Ardea to Odenton (Maryland) | 4,475.34 mi (7,202.36 km) |
