| Holyhead to Accokeek (Maryland) | 3,456.82 mi (5,563.22 km) |
| Holyhead to Acworth (Georgia) | 3,985.12 mi (6,413.43 km) |
| Holyhead to Ada (Oklahoma) | 4,415.59 mi (7,106.21 km) |
| Holyhead to Addison (Illinois) | 3,734.29 mi (6,009.77 km) |
| Holyhead to Addison (Texas) | 4,515.65 mi (7,267.24 km) |
| Holyhead to Adelanto (California) | 5,158.95 mi (8,302.53 km) |
| Holyhead to Adelphi (Maryland) | 3,440.23 mi (5,536.51 km) |
| Holyhead to Adrian (Michigan) | 3,584.98 mi (5,769.46 km) |
| Holyhead to Affton (Missouri) | 3,984.53 mi (6,412.48 km) |
| Holyhead to Agoura Hills (California) | 5,226.17 mi (8,410.71 km) |
| Holyhead to Aguadilla (Puerto Rico) | 4,075.91 mi (6,559.55 km) |
| Holyhead to Aiken (South Carolina) | 3,893.12 mi (6,265.36 km) |
| Holyhead to Akron (Ohio) | 3,524.97 mi (5,672.89 km) |
| Holyhead to Alabaster (Alabama) | 4,112.45 mi (6,618.34 km) |
| Holyhead to Alachua (Florida) | 4,111.74 mi (6,617.20 km) |
