| Idanha-a-Nova to Rockville (Maryland) | 3,626.57 mi (5,836.41 km) |
| Idanha-a-Nova to Rockville Centre (New York) | 3,412.03 mi (5,491.13 km) |
| Idanha-a-Nova to Rockwall (Texas) | 4,770.51 mi (7,677.40 km) |
| Idanha-a-Nova to Rocky Mount (North Carolina) | 3,752.61 mi (6,039.25 km) |
| Idanha-a-Nova to Rocky Point (New York) | 3,370.97 mi (5,425.05 km) |
| Idanha-a-Nova to Rocky River (Ohio) | 3,781.80 mi (6,086.21 km) |
| Idanha-a-Nova to Roessleville (New York) | 3,368.36 mi (5,420.86 km) |
| Idanha-a-Nova to Rogers (Arkansas) | 4,531.93 mi (7,293.44 km) |
| Idanha-a-Nova to Rogers (Minnesota) | 4,192.67 mi (6,747.46 km) |
| Idanha-a-Nova to Rohnert Park (California) | 5,664.31 mi (9,115.82 km) |
| Idanha-a-Nova to Rolla (Missouri) | 4,360.57 mi (7,017.66 km) |
| Idanha-a-Nova to Rolling Meadows (Illinois) | 4,048.52 mi (6,515.46 km) |
| Idanha-a-Nova to Roma (Texas) | 5,159.82 mi (8,303.92 km) |
| Idanha-a-Nova to Rome (Georgia) | 4,174.88 mi (6,718.82 km) |
| Idanha-a-Nova to Rome (New York) | 3,435.49 mi (5,528.89 km) |
