| Harker Heights to Cibolo (Texas) | 108.61 mi (174.79 km) |
| Harker Heights to Cicero (Illinois) | 924.51 mi (1,487.86 km) |
| Harker Heights to Cimarron Hills (Colorado) | 670.49 mi (1,079.04 km) |
| Harker Heights to Cincinnati (Ohio) | 927.65 mi (1,492.91 km) |
| Harker Heights to Cinco Ranch (Texas) | 144.54 mi (232.62 km) |
| Harker Heights to Circleville (Ohio) | 1,015.91 mi (1,634.94 km) |
| Harker Heights to Citrus (California) | 1,195.29 mi (1,923.63 km) |
| Harker Heights to Citrus Heights (California) | 1,435.14 mi (2,309.63 km) |
| Harker Heights to Citrus Park (Florida) | 928.71 mi (1,494.61 km) |
| Harker Heights to Claiborne (Louisiana) | 335.75 mi (540.34 km) |
| Harker Heights to Claremont (California) | 1,185.44 mi (1,907.78 km) |
| Harker Heights to Claremont (New Hampshire) | 1,622.24 mi (2,610.74 km) |
| Harker Heights to Claremore (Oklahoma) | 381.60 mi (614.12 km) |
| Harker Heights to Clarksburg (Maryland) | 1,278.25 mi (2,057.14 km) |
| Harker Heights to Clarksburg (West Virginia) | 1,128.62 mi (1,816.35 km) |
