| Rio Grande City to Richland (Washington) | 1,774.81 mi (2,856.28 km) |
| Rio Grande City to Richmond (California) | 1,583.99 mi (2,549.19 km) |
| Rio Grande City to Richmond (Indiana) | 1,227.21 mi (1,975.00 km) |
| Rio Grande City to Richmond (Kentucky) | 1,154.37 mi (1,857.78 km) |
| Rio Grande City to Richmond (Texas) | 289.64 mi (466.14 km) |
| Rio Grande City to Richmond (Virginia) | 1,464.04 mi (2,356.14 km) |
| Rio Grande City to Richmond Heights (Florida) | 1,145.83 mi (1,844.04 km) |
| Rio Grande City to Richmond Heights (Ohio) | 1,438.25 mi (2,314.65 km) |
| Rio Grande City to Richmond Hill (Georgia) | 1,121.70 mi (1,805.19 km) |
| Rio Grande City to Richmond West (Florida) | 1,142.46 mi (1,838.61 km) |
| Rio Grande City to Richton Park (Illinois) | 1,219.16 mi (1,962.05 km) |
| Rio Grande City to Ridge (New York) | 1,787.13 mi (2,876.10 km) |
| Rio Grande City to Ridgecrest (California) | 1,282.48 mi (2,063.95 km) |
| Rio Grande City to Ridgefield (New Jersey) | 1,731.92 mi (2,787.25 km) |
| Rio Grande City to Ridgefield (Washington) | 1,877.97 mi (3,022.29 km) |
