| Holyhead to Black Forest (Colorado) | 4,483.30 mi (7,215.18 km) |
| Holyhead to Blackfoot (Idaho) | 4,518.49 mi (7,271.81 km) |
| Holyhead to Blackhawk (California) | 5,114.10 mi (8,230.35 km) |
| Holyhead to Blacksburg (Virginia) | 3,661.59 mi (5,892.76 km) |
| Holyhead to Blackwells Mills (New Jersey) | 3,278.43 mi (5,276.13 km) |
| Holyhead to Blaine (Minnesota) | 3,773.08 mi (6,072.18 km) |
| Holyhead to Bloomingdale (Florida) | 4,199.78 mi (6,758.90 km) |
| Holyhead to Bloomingdale (Illinois) | 3,736.48 mi (6,013.29 km) |
| Holyhead to Bloomington (California) | 5,187.28 mi (8,348.12 km) |
| Holyhead to Bloomington (Illinois) | 3,839.70 mi (6,179.40 km) |
| Holyhead to Bloomington (Indiana) | 3,808.98 mi (6,129.96 km) |
| Holyhead to Bloomington (Minnesota) | 3,792.89 mi (6,104.06 km) |
| Holyhead to Bloomsburg (Pennsylvania) | 3,329.05 mi (5,357.59 km) |
| Holyhead to Blue Ash (Ohio) | 3,721.84 mi (5,989.71 km) |
| Holyhead to Blue Island (Illinois) | 3,734.79 mi (6,010.56 km) |
