| Grinon to Rockville (Maryland) | 3,781.89 mi (6,086.36 km) |
| Grinon to Rockville Centre (New York) | 3,566.67 mi (5,740.00 km) |
| Grinon to Rockwall (Texas) | 4,920.81 mi (7,919.28 km) |
| Grinon to Rocky Mount (North Carolina) | 3,912.68 mi (6,296.84 km) |
| Grinon to Rocky Point (New York) | 3,525.52 mi (5,673.78 km) |
| Grinon to Rocky River (Ohio) | 3,929.41 mi (6,323.77 km) |
| Grinon to Roessleville (New York) | 3,518.82 mi (5,663.00 km) |
| Grinon to Rogers (Arkansas) | 4,678.92 mi (7,530.00 km) |
| Grinon to Rogers (Minnesota) | 4,323.45 mi (6,957.92 km) |
| Grinon to Rohnert Park (California) | 5,775.39 mi (9,294.60 km) |
| Grinon to Rolla (Missouri) | 4,506.88 mi (7,253.13 km) |
| Grinon to Rolling Meadows (Illinois) | 4,190.28 mi (6,743.61 km) |
| Grinon to Roma (Texas) | 5,316.73 mi (8,556.46 km) |
| Grinon to Rome (Georgia) | 4,332.35 mi (6,972.25 km) |
| Grinon to Rome (New York) | 3,583.78 mi (5,767.54 km) |
