| Rio Grande City to Badger (Alaska) | 3,393.94 mi (5,462.02 km) |
| Rio Grande City to Bailey's Crossroads (Virginia) | 1,521.82 mi (2,449.13 km) |
| Rio Grande City to Bainbridge (Georgia) | 917.92 mi (1,477.25 km) |
| Rio Grande City to Bainbridge Island (Washington) | 1,951.57 mi (3,140.75 km) |
| Rio Grande City to Baker (Louisiana) | 548.31 mi (882.42 km) |
| Rio Grande City to Bakersfield (California) | 1,345.92 mi (2,166.04 km) |
| Rio Grande City to Balch Springs (Texas) | 457.55 mi (736.36 km) |
| Rio Grande City to Baldwin (New York) | 1,745.25 mi (2,808.71 km) |
| Rio Grande City to Baldwin (Pennsylvania) | 1,449.40 mi (2,332.59 km) |
| Rio Grande City to Baldwin Park (California) | 1,258.20 mi (2,024.88 km) |
| Rio Grande City to Ballenger Creek (Maryland) | 1,525.94 mi (2,455.76 km) |
| Rio Grande City to Ballwin (Missouri) | 970.83 mi (1,562.40 km) |
| Rio Grande City to Baltimore (Maryland) | 1,561.13 mi (2,512.39 km) |
| Rio Grande City to Bangor (Maine) | 2,094.25 mi (3,370.37 km) |
| Rio Grande City to Banning (California) | 1,197.32 mi (1,926.90 km) |
