| Hard to Archdale (North Carolina) | 4,434.04 mi (7,135.89 km) |
| Hard to Arden-Arcade (California) | 5,770.35 mi (9,286.48 km) |
| Hard to Ardmore (Oklahoma) | 5,207.48 mi (8,380.64 km) |
| Hard to Ardmore (Pennsylvania) | 4,057.65 mi (6,530.16 km) |
| Hard to Arecibo (Puerto Rico) | 4,659.47 mi (7,498.69 km) |
| Hard to Arkadelphia (Arkansas) | 5,053.76 mi (8,133.23 km) |
| Hard to Arkansas City (Kansas) | 5,056.99 mi (8,138.43 km) |
| Hard to Arlington (Tennessee) | 4,862.61 mi (7,825.61 km) |
| Hard to Arlington (Texas) | 5,284.44 mi (8,504.48 km) |
| Hard to Arlington (Virginia) | 4,181.46 mi (6,729.41 km) |
| Hard to Arlington (Washington) | 5,223.44 mi (8,406.32 km) |
| Hard to Arlington Heights (Illinois) | 4,470.95 mi (7,195.30 km) |
| Hard to Arnold (Maryland) | 4,149.08 mi (6,677.31 km) |
| Hard to Arnold (Missouri) | 4,736.37 mi (7,622.46 km) |
| Hard to Arroyo Grande (California) | 5,953.61 mi (9,581.41 km) |
