| Gary to Rosemont (California) | 1,798.69 mi (2,894.71 km) |
| Gary to Rosemount (Minnesota) | 361.24 mi (581.36 km) |
| Gary to Rosenberg (Texas) | 957.71 mi (1,541.28 km) |
| Gary to Roseville (California) | 1,792.25 mi (2,884.35 km) |
| Gary to Roseville (Michigan) | 234.95 mi (378.12 km) |
| Gary to Roseville (Minnesota) | 375.68 mi (604.60 km) |
| Gary to Rossmoor (California) | 1,753.94 mi (2,822.69 km) |
| Gary to Rossville (Maryland) | 591.36 mi (951.71 km) |
| Gary to Roswell (Georgia) | 546.68 mi (879.79 km) |
| Gary to Roswell (New Mexico) | 1,096.90 mi (1,765.29 km) |
| Gary to Round Lake (Illinois) | 65.00 mi (104.61 km) |
| Gary to Round Lake Beach (Illinois) | 66.25 mi (106.62 km) |
| Gary to Round Rock (Texas) | 955.73 mi (1,538.09 km) |
| Gary to Rowland Heights (California) | 1,738.56 mi (2,797.94 km) |
| Gary to Rowlett (Texas) | 783.46 mi (1,260.86 km) |
