| Caernarfon to Alum Rock (California) | 5,156.25 mi (8,298.18 km) |
| Caernarfon to Alvin (Texas) | 4,661.24 mi (7,501.55 km) |
| Caernarfon to Amarillo (Texas) | 4,603.62 mi (7,408.81 km) |
| Caernarfon to Amelia (Ohio) | 3,744.06 mi (6,025.49 km) |
| Caernarfon to American Canyon (California) | 5,122.62 mi (8,244.05 km) |
| Caernarfon to American Fork (Utah) | 4,672.17 mi (7,519.14 km) |
| Caernarfon to Americus (Georgia) | 4,083.50 mi (6,571.76 km) |
| Caernarfon to Ames (Iowa) | 3,956.97 mi (6,368.13 km) |
| Caernarfon to Amherst (Ohio) | 3,555.87 mi (5,722.62 km) |
| Caernarfon to Ammon (Idaho) | 4,510.15 mi (7,258.38 km) |
| Caernarfon to Amsterdam (New York) | 3,171.79 mi (5,104.51 km) |
| Caernarfon to Anacortes (Washington) | 4,544.78 mi (7,314.12 km) |
| Caernarfon to Anaheim (California) | 5,233.73 mi (8,422.88 km) |
| Caernarfon to Anchorage (Alaska) | 4,307.48 mi (6,932.21 km) |
| Caernarfon to Anderson (California) | 4,993.04 mi (8,035.53 km) |
