| Hard to Accokeek (Maryland) | 4,186.25 mi (6,737.12 km) |
| Hard to Acworth (Georgia) | 4,716.98 mi (7,591.25 km) |
| Hard to Ada (Oklahoma) | 5,160.73 mi (8,305.39 km) |
| Hard to Addison (Illinois) | 4,479.56 mi (7,209.16 km) |
| Hard to Addison (Texas) | 5,259.88 mi (8,464.97 km) |
| Hard to Adelanto (California) | 5,891.15 mi (9,480.90 km) |
| Hard to Adelphi (Maryland) | 4,170.41 mi (6,711.63 km) |
| Hard to Adrian (Michigan) | 4,328.24 mi (6,965.64 km) |
| Hard to Affton (Missouri) | 4,728.76 mi (7,610.20 km) |
| Hard to Agoura Hills (California) | 5,956.62 mi (9,586.25 km) |
| Hard to Aguadilla (Puerto Rico) | 4,679.34 mi (7,530.67 km) |
| Hard to Aiken (South Carolina) | 4,618.39 mi (7,432.58 km) |
| Hard to Akron (Ohio) | 4,265.18 mi (6,864.15 km) |
| Hard to Alabaster (Alabama) | 4,846.16 mi (7,799.14 km) |
| Hard to Alachua (Florida) | 4,828.79 mi (7,771.19 km) |
