| Harker Heights to Altus (Oklahoma) | 266.72 mi (429.24 km) |
| Harker Heights to Alum Rock (California) | 1,444.00 mi (2,323.90 km) |
| Harker Heights to Alvin (Texas) | 181.68 mi (292.39 km) |
| Harker Heights to Amarillo (Texas) | 374.83 mi (603.23 km) |
| Harker Heights to Amelia (Ohio) | 936.27 mi (1,506.78 km) |
| Harker Heights to American Canyon (California) | 1,478.15 mi (2,378.86 km) |
| Harker Heights to American Fork (Utah) | 1,019.93 mi (1,641.42 km) |
| Harker Heights to Americus (Georgia) | 792.63 mi (1,275.61 km) |
| Harker Heights to Ames (Iowa) | 789.80 mi (1,271.06 km) |
| Harker Heights to Amherst (Ohio) | 1,114.52 mi (1,793.64 km) |
| Harker Heights to Ammon (Idaho) | 1,160.85 mi (1,868.22 km) |
| Harker Heights to Amsterdam (New York) | 1,524.61 mi (2,453.62 km) |
| Harker Heights to Anacortes (Washington) | 1,776.86 mi (2,859.59 km) |
| Harker Heights to Anaheim (California) | 1,192.10 mi (1,918.50 km) |
| Harker Heights to Anchorage (Alaska) | 3,096.46 mi (4,983.28 km) |
