| Rio Grande City to Buena Park (California) | 1,254.74 mi (2,019.31 km) |
| Rio Grande City to Buenaventura Lakes (Florida) | 1,079.41 mi (1,737.14 km) |
| Rio Grande City to Buffalo (Minnesota) | 1,327.57 mi (2,136.51 km) |
| Rio Grande City to Buffalo (New York) | 1,601.85 mi (2,577.93 km) |
| Rio Grande City to Buffalo Grove (Illinois) | 1,252.20 mi (2,015.22 km) |
| Rio Grande City to Buford (Georgia) | 1,032.44 mi (1,661.55 km) |
| Rio Grande City to Bull Run (Virginia) | 1,501.12 mi (2,415.82 km) |
| Rio Grande City to Bullhead City (Arizona) | 1,109.74 mi (1,785.95 km) |
| Rio Grande City to Burbank (California) | 1,279.56 mi (2,059.26 km) |
| Rio Grande City to Burbank (Illinois) | 1,233.28 mi (1,984.77 km) |
| Rio Grande City to Burien (Washington) | 1,936.82 mi (3,117.00 km) |
| Rio Grande City to Burkburnett (Texas) | 531.81 mi (855.86 km) |
| Rio Grande City to Burke (Virginia) | 1,513.22 mi (2,435.30 km) |
| Rio Grande City to Burke Centre (Virginia) | 1,511.91 mi (2,433.18 km) |
| Rio Grande City to Burleson (Texas) | 433.29 mi (697.31 km) |
