| Harker Heights to Troy (Michigan) | 1,126.99 mi (1,813.71 km) |
| Harker Heights to Troy (Missouri) | 664.04 mi (1,068.67 km) |
| Harker Heights to Troy (New York) | 1,542.57 mi (2,482.53 km) |
| Harker Heights to Troy (Ohio) | 975.35 mi (1,569.67 km) |
| Harker Heights to Truckee (California) | 1,390.45 mi (2,237.71 km) |
| Harker Heights to Trujillo Alto (Puerto Rico) | 2,160.54 mi (3,477.05 km) |
| Harker Heights to Trumbull Center (Connecticut) | 1,528.03 mi (2,459.12 km) |
| Harker Heights to Trussville (Alabama) | 669.58 mi (1,077.58 km) |
| Harker Heights to Tualatin (Oregon) | 1,673.49 mi (2,693.23 km) |
| Harker Heights to Tuckahoe (Virginia) | 1,227.20 mi (1,974.99 km) |
| Harker Heights to Tucker (Georgia) | 806.37 mi (1,297.73 km) |
| Harker Heights to Tucson (Arizona) | 781.94 mi (1,258.41 km) |
| Harker Heights to Tucson Estates (Arizona) | 796.49 mi (1,281.83 km) |
| Harker Heights to Tucson Mountains (Arizona) | 793.90 mi (1,277.65 km) |
| Harker Heights to Tukwila (Washington) | 1,725.03 mi (2,776.17 km) |
