| Grinon to Robertsville (New Jersey) | 3,607.28 mi (5,805.36 km) |
| Grinon to Robinson (Texas) | 5,013.32 mi (8,068.16 km) |
| Grinon to Robstown (Texas) | 5,193.21 mi (8,357.66 km) |
| Grinon to Rochester (Michigan) | 3,949.49 mi (6,356.09 km) |
| Grinon to Rochester (Minnesota) | 4,318.10 mi (6,949.31 km) |
| Grinon to Rochester (New Hampshire) | 3,371.13 mi (5,425.31 km) |
| Grinon to Rochester (New York) | 3,683.63 mi (5,928.23 km) |
| Grinon to Rochester Hills (Michigan) | 3,951.83 mi (6,359.86 km) |
| Grinon to Rock Hill (South Carolina) | 4,105.42 mi (6,607.04 km) |
| Grinon to Rock Island (Illinois) | 4,325.25 mi (6,960.82 km) |
| Grinon to Rock Springs (Wyoming) | 5,106.19 mi (8,217.62 km) |
| Grinon to Rockford (Illinois) | 4,230.26 mi (6,807.94 km) |
| Grinon to Rockledge (Florida) | 4,331.35 mi (6,970.64 km) |
| Grinon to Rocklin (California) | 5,699.02 mi (9,171.68 km) |
| Grinon to Rockport (Texas) | 5,154.47 mi (8,295.31 km) |
