| Rio Grande City to Bound Brook (New Jersey) | 1,699.17 mi (2,734.55 km) |
| Rio Grande City to Bountiful (Utah) | 1,248.13 mi (2,008.68 km) |
| Rio Grande City to Bourbonnais (Illinois) | 1,198.07 mi (1,928.11 km) |
| Rio Grande City to Bowie (Maryland) | 1,543.82 mi (2,484.54 km) |
| Rio Grande City to Bowling Green (Kentucky) | 1,030.47 mi (1,658.39 km) |
| Rio Grande City to Bowling Green (Ohio) | 1,348.88 mi (2,170.82 km) |
| Rio Grande City to Box Elder (South Dakota) | 1,248.00 mi (2,008.47 km) |
| Rio Grande City to Boynton Beach (Florida) | 1,158.26 mi (1,864.04 km) |
| Rio Grande City to Bozeman (Montana) | 1,494.61 mi (2,405.34 km) |
| Rio Grande City to Bradenton (Florida) | 1,002.92 mi (1,614.04 km) |
| Rio Grande City to Bradfordville (Florida) | 932.88 mi (1,501.32 km) |
| Rio Grande City to Bradley (Illinois) | 1,197.99 mi (1,927.97 km) |
| Rio Grande City to Bradley Gardens (New Jersey) | 1,693.27 mi (2,725.06 km) |
| Rio Grande City to Brainerd (Minnesota) | 1,403.23 mi (2,258.28 km) |
| Rio Grande City to Brambleton (Virginia) | 1,507.20 mi (2,425.60 km) |
