| Rio Grande City to River Ridge (Louisiana) | 579.07 mi (931.92 km) |
| Rio Grande City to Riverbank (California) | 1,508.23 mi (2,427.27 km) |
| Rio Grande City to Riverdale (Georgia) | 993.67 mi (1,599.16 km) |
| Rio Grande City to Riverdale (Illinois) | 1,231.40 mi (1,981.74 km) |
| Rio Grande City to Riverside (California) | 1,223.71 mi (1,969.37 km) |
| Rio Grande City to Riverside (Ohio) | 1,254.20 mi (2,018.44 km) |
| Rio Grande City to Riverton (Utah) | 1,233.11 mi (1,984.49 km) |
| Rio Grande City to Riverton (Wyoming) | 1,271.51 mi (2,046.29 km) |
| Rio Grande City to Riverview (Florida) | 1,020.14 mi (1,641.75 km) |
| Rio Grande City to Riverview (Michigan) | 1,404.56 mi (2,260.42 km) |
| Rio Grande City to Riviera Beach (Florida) | 1,157.69 mi (1,863.12 km) |
| Rio Grande City to Riviera Beach (Maryland) | 1,560.69 mi (2,511.69 km) |
| Rio Grande City to Roanoke (Virginia) | 1,334.93 mi (2,148.37 km) |
| Rio Grande City to Roanoke Rapids (North Carolina) | 1,424.38 mi (2,292.31 km) |
| Rio Grande City to Robbinsdale (Minnesota) | 1,323.74 mi (2,130.35 km) |
