| Rio Grande City to Bonham (Texas) | 522.21 mi (840.42 km) |
| Rio Grande City to Bonita (California) | 1,175.62 mi (1,891.98 km) |
| Rio Grande City to Bonita Springs (Florida) | 1,053.81 mi (1,695.95 km) |
| Rio Grande City to Bonney Lake (Washington) | 1,917.47 mi (3,085.87 km) |
| Rio Grande City to Boone (Iowa) | 1,118.55 mi (1,800.14 km) |
| Rio Grande City to Boone (North Carolina) | 1,216.43 mi (1,957.65 km) |
| Rio Grande City to Borger (Texas) | 658.98 mi (1,060.53 km) |
| Rio Grande City to Bossier City (Louisiana) | 525.41 mi (845.56 km) |
| Rio Grande City to Boston (Massachusetts) | 1,913.42 mi (3,079.35 km) |
| Rio Grande City to Bostonia (California) | 1,174.24 mi (1,889.76 km) |
| Rio Grande City to Bothell (Washington) | 1,945.48 mi (3,130.94 km) |
| Rio Grande City to Bothell East (Washington) | 1,946.27 mi (3,132.23 km) |
| Rio Grande City to Bothell West (Washington) | 1,948.18 mi (3,135.30 km) |
| Rio Grande City to Boulder (Colorado) | 1,012.61 mi (1,629.64 km) |
| Rio Grande City to Boulder City (Nevada) | 1,152.75 mi (1,855.17 km) |
