| Harker Heights to Clarksdale (Mississippi) | 465.09 mi (748.49 km) |
| Harker Heights to Clarkston (Georgia) | 803.85 mi (1,293.67 km) |
| Harker Heights to Clarksville (Indiana) | 839.79 mi (1,351.51 km) |
| Harker Heights to Clarksville (Tennessee) | 702.82 mi (1,131.08 km) |
| Harker Heights to Clawson (Michigan) | 1,124.80 mi (1,810.19 km) |
| Harker Heights to Clay (Alabama) | 668.86 mi (1,076.42 km) |
| Harker Heights to Clayton (California) | 1,457.28 mi (2,345.27 km) |
| Harker Heights to Clayton (Missouri) | 667.92 mi (1,074.91 km) |
| Harker Heights to Clayton (North Carolina) | 1,150.29 mi (1,851.21 km) |
| Harker Heights to Clayton (Ohio) | 963.60 mi (1,550.77 km) |
| Harker Heights to Clearfield (Utah) | 1,058.78 mi (1,703.95 km) |
| Harker Heights to Clearlake (California) | 1,509.80 mi (2,429.79 km) |
| Harker Heights to Clearwater (Florida) | 918.92 mi (1,478.87 km) |
| Harker Heights to Cleburne (Texas) | 90.80 mi (146.13 km) |
| Harker Heights to Clemmons (North Carolina) | 1,049.83 mi (1,689.54 km) |
