| Keystone to Arcata (California) | 2,493.06 mi (4,012.20 km) |
| Keystone to Archdale (North Carolina) | 558.76 mi (899.24 km) |
| Keystone to Arden-Arcade (California) | 2,332.48 mi (3,753.76 km) |
| Keystone to Ardmore (Oklahoma) | 954.23 mi (1,535.69 km) |
| Keystone to Ardmore (Pennsylvania) | 919.85 mi (1,480.36 km) |
| Keystone to Arecibo (Puerto Rico) | 1,206.64 mi (1,941.90 km) |
| Keystone to Arkadelphia (Arkansas) | 744.44 mi (1,198.06 km) |
| Keystone to Arkansas City (Kansas) | 1,041.00 mi (1,675.33 km) |
| Keystone to Arlington (Tennessee) | 643.96 mi (1,036.36 km) |
| Keystone to Arlington (Texas) | 920.24 mi (1,480.98 km) |
| Keystone to Arlington (Virginia) | 806.89 mi (1,298.56 km) |
| Keystone to Arlington (Washington) | 2,515.26 mi (4,047.92 km) |
| Keystone to Arlington Heights (Illinois) | 1,011.09 mi (1,627.19 km) |
| Keystone to Arnold (Maryland) | 831.24 mi (1,337.75 km) |
| Keystone to Arnold (Missouri) | 840.58 mi (1,352.79 km) |
