| Thornton to Bountiful (Utah) | 4,696.25 mi (7,557.89 km) |
| Thornton to Bourbonnais (Illinois) | 3,855.40 mi (6,204.67 km) |
| Thornton to Bowie (Maryland) | 3,535.43 mi (5,689.73 km) |
| Thornton to Bowling Green (Kentucky) | 4,008.07 mi (6,450.37 km) |
| Thornton to Bowling Green (Ohio) | 3,687.84 mi (5,935.01 km) |
| Thornton to Box Elder (South Dakota) | 4,240.89 mi (6,825.06 km) |
| Thornton to Boynton Beach (Florida) | 4,289.57 mi (6,903.40 km) |
| Thornton to Bozeman (Montana) | 4,408.04 mi (7,094.05 km) |
| Thornton to Bradenton (Florida) | 4,339.94 mi (6,984.46 km) |
| Thornton to Bradfordville (Florida) | 4,245.15 mi (6,831.92 km) |
| Thornton to Bradley (Illinois) | 3,855.09 mi (6,204.17 km) |
| Thornton to Bradley Gardens (New Jersey) | 3,378.87 mi (5,437.77 km) |
| Thornton to Brainerd (Minnesota) | 3,831.04 mi (6,165.46 km) |
| Thornton to Brambleton (Virginia) | 3,565.34 mi (5,737.85 km) |
| Thornton to Brandermill (Virginia) | 3,643.64 mi (5,863.88 km) |
