| Thornton to Bonita (California) | 5,324.46 mi (8,568.89 km) |
| Thornton to Bonita Springs (Florida) | 4,367.46 mi (7,028.75 km) |
| Thornton to Bonney Lake (Washington) | 4,636.23 mi (7,461.29 km) |
| Thornton to Boone (Iowa) | 4,030.64 mi (6,486.68 km) |
| Thornton to Boone (North Carolina) | 3,860.92 mi (6,213.55 km) |
| Thornton to Borger (Texas) | 4,629.24 mi (7,450.04 km) |
| Thornton to Bossier City (Louisiana) | 4,511.21 mi (7,260.09 km) |
| Thornton to Boston (Massachusetts) | 3,159.39 mi (5,084.55 km) |
| Thornton to Bostonia (California) | 5,312.97 mi (8,550.41 km) |
| Thornton to Bothell (Washington) | 4,602.94 mi (7,407.72 km) |
| Thornton to Bothell East (Washington) | 4,600.53 mi (7,403.85 km) |
| Thornton to Bothell West (Washington) | 4,602.02 mi (7,406.23 km) |
| Thornton to Boulder (Colorado) | 4,528.40 mi (7,287.76 km) |
| Thornton to Boulder City (Nevada) | 5,075.35 mi (8,167.98 km) |
| Thornton to Bound Brook (New Jersey) | 3,373.94 mi (5,429.83 km) |
