| Holyhead to Alum Rock (California) | 5,137.30 mi (8,267.69 km) |
| Holyhead to Alvin (Texas) | 4,643.22 mi (7,472.54 km) |
| Holyhead to Amarillo (Texas) | 4,584.88 mi (7,378.66 km) |
| Holyhead to Amelia (Ohio) | 3,726.04 mi (5,996.49 km) |
| Holyhead to American Canyon (California) | 5,103.69 mi (8,213.60 km) |
| Holyhead to American Fork (Utah) | 4,653.15 mi (7,488.53 km) |
| Holyhead to Americus (Georgia) | 4,066.20 mi (6,543.92 km) |
| Holyhead to Ames (Iowa) | 3,938.24 mi (6,337.99 km) |
| Holyhead to Amherst (Ohio) | 3,537.76 mi (5,693.47 km) |
| Holyhead to Ammon (Idaho) | 4,491.15 mi (7,227.80 km) |
| Holyhead to Amsterdam (New York) | 3,154.07 mi (5,075.98 km) |
| Holyhead to Anacortes (Washington) | 4,526.19 mi (7,284.21 km) |
| Holyhead to Anaheim (California) | 5,214.71 mi (8,392.27 km) |
| Holyhead to Anchorage (Alaska) | 4,291.66 mi (6,906.76 km) |
| Holyhead to Anderson (California) | 4,974.17 mi (8,005.15 km) |
