| Rio Grande City to Bixby (Oklahoma) | 683.28 mi (1,099.63 km) |
| Rio Grande City to Black Forest (Colorado) | 939.28 mi (1,511.63 km) |
| Rio Grande City to Blackfoot (Idaho) | 1,388.21 mi (2,234.10 km) |
| Rio Grande City to Blackhawk (California) | 1,558.77 mi (2,508.60 km) |
| Rio Grande City to Blacksburg (Virginia) | 1,310.75 mi (2,109.45 km) |
| Rio Grande City to Blackwells Mills (New Jersey) | 1,693.52 mi (2,725.45 km) |
| Rio Grande City to Blaine (Minnesota) | 1,334.91 mi (2,148.33 km) |
| Rio Grande City to Bloomingdale (Florida) | 1,022.70 mi (1,645.87 km) |
| Rio Grande City to Bloomingdale (Illinois) | 1,236.00 mi (1,989.14 km) |
| Rio Grande City to Bloomington (California) | 1,227.00 mi (1,974.67 km) |
| Rio Grande City to Bloomington (Illinois) | 1,125.65 mi (1,811.56 km) |
| Rio Grande City to Bloomington (Indiana) | 1,133.58 mi (1,824.32 km) |
| Rio Grande City to Bloomington (Minnesota) | 1,310.94 mi (2,109.75 km) |
| Rio Grande City to Bloomsburg (Pennsylvania) | 1,626.72 mi (2,617.95 km) |
| Rio Grande City to Blue Ash (Ohio) | 1,218.85 mi (1,961.55 km) |
