| Thornton to Blue Springs (Missouri) | 4,197.92 mi (6,755.90 km) |
| Thornton to Bluffdale (Utah) | 4,720.58 mi (7,597.04 km) |
| Thornton to Bluffton (Indiana) | 3,775.58 mi (6,076.21 km) |
| Thornton to Bluffton (South Carolina) | 4,031.32 mi (6,487.78 km) |
| Thornton to Blythe (California) | 5,191.99 mi (8,355.70 km) |
| Thornton to Blytheville (Arkansas) | 4,192.43 mi (6,747.06 km) |
| Thornton to Boca Raton (Florida) | 4,298.65 mi (6,918.01 km) |
| Thornton to Boerne (Texas) | 4,847.60 mi (7,801.45 km) |
| Thornton to Bogalusa (Louisiana) | 4,456.50 mi (7,172.04 km) |
| Thornton to Boiling Springs (South Carolina) | 3,930.77 mi (6,325.97 km) |
| Thornton to Boise (Idaho) | 4,675.99 mi (7,525.29 km) |
| Thornton to Bolingbrook (Illinois) | 3,839.13 mi (6,178.48 km) |
| Thornton to Bolivar (Missouri) | 4,238.39 mi (6,821.03 km) |
| Thornton to Bon Air (Virginia) | 3,636.39 mi (5,852.20 km) |
| Thornton to Bonham (Texas) | 4,549.79 mi (7,322.18 km) |
