| Johnston to Altus (Oklahoma) | 572.56 mi (921.45 km) |
| Johnston to Alum Rock (California) | 1,519.87 mi (2,445.99 km) |
| Johnston to Alvin (Texas) | 854.64 mi (1,375.41 km) |
| Johnston to Amarillo (Texas) | 626.93 mi (1,008.94 km) |
| Johnston to Amelia (Ohio) | 532.68 mi (857.27 km) |
| Johnston to American Canyon (California) | 1,523.92 mi (2,452.50 km) |
| Johnston to American Fork (Utah) | 944.48 mi (1,519.99 km) |
| Johnston to Americus (Georgia) | 845.67 mi (1,360.97 km) |
| Johnston to Ames (Iowa) | 23.70 mi (38.15 km) |
| Johnston to Amherst (Ohio) | 594.21 mi (956.29 km) |
| Johnston to Ammon (Idaho) | 933.83 mi (1,502.85 km) |
| Johnston to Amsterdam (New York) | 999.41 mi (1,608.39 km) |
| Johnston to Anacortes (Washington) | 1,475.81 mi (2,375.09 km) |
| Johnston to Anaheim (California) | 1,419.38 mi (2,284.27 km) |
| Johnston to Anchorage (Alaska) | 2,630.50 mi (4,233.37 km) |
