| Rio Grande City to Arcata (California) | 1,753.68 mi (2,822.27 km) |
| Rio Grande City to Archdale (North Carolina) | 1,291.53 mi (2,078.52 km) |
| Rio Grande City to Arden-Arcade (California) | 1,555.93 mi (2,504.03 km) |
| Rio Grande City to Ardmore (Oklahoma) | 549.27 mi (883.97 km) |
| Rio Grande City to Ardmore (Pennsylvania) | 1,645.75 mi (2,648.58 km) |
| Rio Grande City to Arecibo (Puerto Rico) | 2,114.97 mi (3,403.71 km) |
| Rio Grande City to Arkadelphia (Arkansas) | 635.34 mi (1,022.47 km) |
| Rio Grande City to Arkansas City (Kansas) | 746.08 mi (1,200.70 km) |
| Rio Grande City to Arlington (Tennessee) | 818.49 mi (1,317.23 km) |
| Rio Grande City to Arlington (Texas) | 448.33 mi (721.52 km) |
| Rio Grande City to Arlington (Virginia) | 1,524.22 mi (2,453.00 km) |
| Rio Grande City to Arlington (Washington) | 1,961.52 mi (3,156.77 km) |
| Rio Grande City to Arlington Heights (Illinois) | 1,247.43 mi (2,007.55 km) |
| Rio Grande City to Arnold (Maryland) | 1,558.24 mi (2,507.74 km) |
| Rio Grande City to Arnold (Missouri) | 966.34 mi (1,555.17 km) |
