| Harker Heights to Rockville (Maryland) | 1,280.55 mi (2,060.84 km) |
| Harker Heights to Rockville Centre (New York) | 1,492.51 mi (2,401.96 km) |
| Harker Heights to Rockwall (Texas) | 146.68 mi (236.05 km) |
| Harker Heights to Rocky Mount (North Carolina) | 1,189.81 mi (1,914.82 km) |
| Harker Heights to Rocky Point (New York) | 1,533.29 mi (2,467.60 km) |
| Harker Heights to Rocky River (Ohio) | 1,133.29 mi (1,823.85 km) |
| Harker Heights to Roessleville (New York) | 1,535.86 mi (2,471.73 km) |
| Harker Heights to Rogers (Arkansas) | 415.08 mi (668.01 km) |
| Harker Heights to Rogers (Minnesota) | 1,000.59 mi (1,610.30 km) |
| Harker Heights to Rohnert Park (California) | 1,503.82 mi (2,420.17 km) |
| Harker Heights to Rolla (Missouri) | 581.75 mi (936.23 km) |
| Harker Heights to Rolling Meadows (Illinois) | 928.37 mi (1,494.07 km) |
| Harker Heights to Roma (Texas) | 331.06 mi (532.79 km) |
| Harker Heights to Rome (Georgia) | 757.23 mi (1,218.64 km) |
| Harker Heights to Rome (New York) | 1,474.32 mi (2,372.69 km) |
