| Harker Heights to Candler-McAfee (Georgia) | 801.03 mi (1,289.14 km) |
| Harker Heights to Caño Martin Peña (Puerto Rico) | 2,155.75 mi (3,469.35 km) |
| Harker Heights to Cañon City (Colorado) | 666.83 mi (1,073.16 km) |
| Harker Heights to Canóvanas (Puerto Rico) | 2,166.39 mi (3,486.46 km) |
| Harker Heights to Canton (Georgia) | 795.69 mi (1,280.54 km) |
| Harker Heights to Canton (Illinois) | 782.14 mi (1,258.74 km) |
| Harker Heights to Canton (Mississippi) | 459.29 mi (739.16 km) |
| Harker Heights to Canton (Ohio) | 1,129.61 mi (1,817.93 km) |
| Harker Heights to Canyon (Texas) | 367.60 mi (591.60 km) |
| Harker Heights to Canyon Lake (California) | 1,157.31 mi (1,862.51 km) |
| Harker Heights to Canyon Lake (Texas) | 89.48 mi (144.01 km) |
| Harker Heights to Cape Coral (Florida) | 993.82 mi (1,599.40 km) |
| Harker Heights to Cape Girardeau (Missouri) | 632.16 mi (1,017.36 km) |
| Harker Heights to Carbondale (Illinois) | 664.70 mi (1,069.74 km) |
| Harker Heights to Carlisle (Pennsylvania) | 1,305.75 mi (2,101.41 km) |
