| Holyhead to Ashwaubenon (Wisconsin) | 3,619.11 mi (5,824.40 km) |
| Holyhead to Aspen Hill (Maryland) | 3,440.75 mi (5,537.34 km) |
| Holyhead to Astoria (Oregon) | 4,688.19 mi (7,544.92 km) |
| Holyhead to Atascadero (California) | 5,210.89 mi (8,386.11 km) |
| Holyhead to Atascocita (Texas) | 4,608.35 mi (7,416.43 km) |
| Holyhead to Atchison (Kansas) | 4,115.01 mi (6,622.47 km) |
| Holyhead to Athens (Alabama) | 4,039.34 mi (6,500.70 km) |
| Holyhead to Athens (Georgia) | 3,938.30 mi (6,338.09 km) |
| Holyhead to Athens (Ohio) | 3,628.76 mi (5,839.93 km) |
| Holyhead to Athens (Tennessee) | 3,913.37 mi (6,297.97 km) |
| Holyhead to Athens (Texas) | 4,516.59 mi (7,268.75 km) |
| Holyhead to Atlanta (Georgia) | 3,989.74 mi (6,420.86 km) |
| Holyhead to Atlantic Beach (Florida) | 4,039.85 mi (6,501.51 km) |
| Holyhead to Atlantic City (New Jersey) | 3,322.09 mi (5,346.39 km) |
| Holyhead to Attleboro (Massachusetts) | 3,082.09 mi (4,960.14 km) |
