| Hard to Burlingame (California) | 5,857.94 mi (9,427.44 km) |
| Hard to Burlington (Iowa) | 4,650.57 mi (7,484.36 km) |
| Hard to Burlington (Kentucky) | 4,486.15 mi (7,219.75 km) |
| Hard to Burlington (North Carolina) | 4,405.54 mi (7,090.03 km) |
| Hard to Burlington (Vermont) | 3,788.58 mi (6,097.12 km) |
| Hard to Burlington (Wisconsin) | 4,455.05 mi (7,169.71 km) |
| Hard to Burnsville (Minnesota) | 4,539.82 mi (7,306.13 km) |
| Hard to Burr Ridge (Illinois) | 4,484.69 mi (7,217.41 km) |
| Hard to Burton (Michigan) | 4,262.57 mi (6,859.94 km) |
| Hard to Burtonsville (Maryland) | 4,164.19 mi (6,701.62 km) |
| Hard to Butler (Pennsylvania) | 4,209.48 mi (6,774.51 km) |
| Hard to Butte (Montana) | 5,104.04 mi (8,214.16 km) |
| Hard to Byram (Mississippi) | 5,038.64 mi (8,108.90 km) |
| Hard to Cabot (Arkansas) | 4,970.12 mi (7,998.64 km) |
| Hard to Cadillac (Michigan) | 4,275.64 mi (6,880.97 km) |
