| Thornton to Accokeek (Maryland) | 3,558.95 mi (5,727.58 km) |
| Thornton to Acworth (Georgia) | 4,085.86 mi (6,575.56 km) |
| Thornton to Ada (Oklahoma) | 4,505.40 mi (7,250.73 km) |
| Thornton to Addison (Illinois) | 3,824.04 mi (6,154.19 km) |
| Thornton to Addison (Texas) | 4,607.05 mi (7,414.33 km) |
| Thornton to Adelanto (California) | 5,226.77 mi (8,411.68 km) |
| Thornton to Adelphi (Maryland) | 3,542.05 mi (5,700.38 km) |
| Thornton to Adrian (Michigan) | 3,678.07 mi (5,919.29 km) |
| Thornton to Affton (Missouri) | 4,076.14 mi (6,559.92 km) |
| Thornton to Agoura Hills (California) | 5,292.81 mi (8,517.96 km) |
| Thornton to Aguadilla (Puerto Rico) | 4,194.13 mi (6,749.79 km) |
| Thornton to Aiken (South Carolina) | 3,996.55 mi (6,431.82 km) |
| Thornton to Akron (Ohio) | 3,621.06 mi (5,827.53 km) |
| Thornton to Alabaster (Alabama) | 4,212.24 mi (6,778.95 km) |
| Thornton to Alachua (Florida) | 4,217.58 mi (6,787.54 km) |
