| Ardea to Ridgeland (Mississippi) | 5,350.91 mi (8,611.46 km) |
| Ardea to Ridgewood (New Jersey) | 4,288.52 mi (6,901.70 km) |
| Ardea to Rifle (Colorado) | 5,695.60 mi (9,166.18 km) |
| Ardea to Rincon (Georgia) | 4,957.65 mi (7,978.57 km) |
| Ardea to Ringwood (New Jersey) | 4,291.06 mi (6,905.79 km) |
| Ardea to Río Grande (Puerto Rico) | 4,793.56 mi (7,714.49 km) |
| Ardea to Rio Grande City (Texas) | 6,016.27 mi (9,682.25 km) |
| Ardea to Rio Linda (California) | 6,179.49 mi (9,944.93 km) |
| Ardea to Rio Rancho (New Mexico) | 5,879.51 mi (9,462.16 km) |
| Ardea to Rio Rico (Arizona) | 6,239.09 mi (10,040.84 km) |
| Ardea to Ripon (California) | 6,225.43 mi (10,018.86 km) |
| Ardea to River Edge (New Jersey) | 4,287.30 mi (6,899.74 km) |
| Ardea to River Falls (Wisconsin) | 4,888.03 mi (7,866.53 km) |
| Ardea to River Forest (Illinois) | 4,831.02 mi (7,774.77 km) |
| Ardea to River Grove (Illinois) | 4,830.50 mi (7,773.94 km) |
