| Portlethen to Ridgeland (Mississippi) | 4,299.97 mi (6,920.13 km) |
| Portlethen to Ridgewood (New Jersey) | 3,272.40 mi (5,266.42 km) |
| Portlethen to Rifle (Colorado) | 4,497.41 mi (7,237.89 km) |
| Portlethen to Rincon (Georgia) | 3,982.42 mi (6,409.08 km) |
| Portlethen to Ringwood (New Jersey) | 3,272.23 mi (5,266.15 km) |
| Portlethen to Río Grande (Puerto Rico) | 4,176.73 mi (6,721.80 km) |
| Portlethen to Rio Grande City (Texas) | 4,945.00 mi (7,958.21 km) |
| Portlethen to Rio Linda (California) | 4,942.25 mi (7,953.77 km) |
| Portlethen to Rio Rancho (New Mexico) | 4,704.46 mi (7,571.09 km) |
| Portlethen to Rio Rico (Arizona) | 5,059.46 mi (8,142.41 km) |
| Portlethen to Ripon (California) | 4,990.43 mi (8,031.31 km) |
| Portlethen to River Edge (New Jersey) | 3,272.40 mi (5,266.42 km) |
| Portlethen to River Falls (Wisconsin) | 3,726.71 mi (5,997.56 km) |
| Portlethen to River Forest (Illinois) | 3,716.04 mi (5,980.39 km) |
| Portlethen to River Grove (Illinois) | 3,715.18 mi (5,979.01 km) |
