| Witham to Black Forest (Colorado) | 4,724.92 mi (7,604.02 km) |
| Witham to Blackfoot (Idaho) | 4,752.72 mi (7,648.76 km) |
| Witham to Blackhawk (California) | 5,344.37 mi (8,600.93 km) |
| Witham to Blacksburg (Virginia) | 3,903.86 mi (6,282.66 km) |
| Witham to Blackwells Mills (New Jersey) | 3,520.24 mi (5,665.27 km) |
| Witham to Blaine (Minnesota) | 4,016.02 mi (6,463.17 km) |
| Witham to Bloomingdale (Florida) | 4,436.70 mi (7,140.18 km) |
| Witham to Bloomingdale (Illinois) | 3,981.16 mi (6,407.05 km) |
| Witham to Bloomington (California) | 5,424.18 mi (8,729.38 km) |
| Witham to Bloomington (Illinois) | 4,084.41 mi (6,573.22 km) |
| Witham to Bloomington (Indiana) | 4,053.47 mi (6,523.43 km) |
| Witham to Bloomington (Minnesota) | 4,035.95 mi (6,495.24 km) |
| Witham to Bloomsburg (Pennsylvania) | 3,571.87 mi (5,748.37 km) |
| Witham to Blue Ash (Ohio) | 3,966.03 mi (6,382.71 km) |
| Witham to Blue Island (Illinois) | 3,979.49 mi (6,404.37 km) |
