| Forest Grove to Rockville (Maryland) | 2,356.90 mi (3,793.06 km) |
| Forest Grove to Rockville Centre (New York) | 2,478.64 mi (3,988.99 km) |
| Forest Grove to Rockwall (Texas) | 1,660.58 mi (2,672.45 km) |
| Forest Grove to Rocky Mount (North Carolina) | 2,426.89 mi (3,905.70 km) |
| Forest Grove to Rocky Point (New York) | 2,504.23 mi (4,030.16 km) |
| Forest Grove to Rocky River (Ohio) | 2,063.65 mi (3,321.12 km) |
| Forest Grove to Roessleville (New York) | 2,415.49 mi (3,887.36 km) |
| Forest Grove to Rogers (Arkansas) | 1,628.81 mi (2,621.32 km) |
| Forest Grove to Rogers (Minnesota) | 1,425.88 mi (2,294.72 km) |
| Forest Grove to Rohnert Park (California) | 496.29 mi (798.71 km) |
| Forest Grove to Rolla (Missouri) | 1,686.59 mi (2,714.30 km) |
| Forest Grove to Rolling Meadows (Illinois) | 1,751.61 mi (2,818.94 km) |
| Forest Grove to Roma (Texas) | 1,872.57 mi (3,013.61 km) |
| Forest Grove to Rome (Georgia) | 2,131.69 mi (3,430.63 km) |
| Forest Grove to Rome (New York) | 2,322.39 mi (3,737.52 km) |
