| Harker Heights to Security-Widefield (Colorado) | 665.02 mi (1,070.25 km) |
| Harker Heights to Sedalia (Missouri) | 584.42 mi (940.53 km) |
| Harker Heights to Sedro-Woolley (Washington) | 1,762.66 mi (2,836.73 km) |
| Harker Heights to Seguin (Texas) | 103.25 mi (166.16 km) |
| Harker Heights to Selden (New York) | 1,526.42 mi (2,456.54 km) |
| Harker Heights to Selma (Alabama) | 630.28 mi (1,014.34 km) |
| Harker Heights to Selma (California) | 1,314.07 mi (2,114.79 km) |
| Harker Heights to Selma (Texas) | 109.15 mi (175.66 km) |
| Harker Heights to Seminole (Florida) | 920.44 mi (1,481.30 km) |
| Harker Heights to Seven Hills (Ohio) | 1,137.49 mi (1,830.62 km) |
| Harker Heights to Seven Oaks (South Carolina) | 981.78 mi (1,580.02 km) |
| Harker Heights to Severn (Maryland) | 1,305.01 mi (2,100.21 km) |
| Harker Heights to Severna Park (Maryland) | 1,310.38 mi (2,108.85 km) |
| Harker Heights to Sevierville (Tennessee) | 876.17 mi (1,410.06 km) |
| Harker Heights to Seymour (Indiana) | 858.76 mi (1,382.04 km) |
