| Thornton to Black Forest (Colorado) | 4,560.68 mi (7,339.70 km) |
| Thornton to Blackfoot (Idaho) | 4,582.92 mi (7,375.50 km) |
| Thornton to Blackhawk (California) | 5,173.21 mi (8,325.48 km) |
| Thornton to Blacksburg (Virginia) | 3,762.62 mi (6,055.36 km) |
| Thornton to Blackwells Mills (New Jersey) | 3,380.41 mi (5,440.24 km) |
| Thornton to Blaine (Minnesota) | 3,854.11 mi (6,202.59 km) |
| Thornton to Bloomingdale (Florida) | 4,307.12 mi (6,931.63 km) |
| Thornton to Bloomingdale (Illinois) | 3,826.13 mi (6,157.57 km) |
| Thornton to Bloomington (California) | 5,255.66 mi (8,458.17 km) |
| Thornton to Bloomington (Illinois) | 3,930.33 mi (6,325.26 km) |
| Thornton to Bloomington (Indiana) | 3,903.16 mi (6,281.53 km) |
| Thornton to Bloomington (Minnesota) | 3,874.28 mi (6,235.05 km) |
| Thornton to Bloomsburg (Pennsylvania) | 3,429.09 mi (5,518.59 km) |
| Thornton to Blue Ash (Ohio) | 3,817.69 mi (6,143.98 km) |
| Thornton to Blue Island (Illinois) | 3,825.14 mi (6,155.97 km) |
