| Highland to Cadillac (Michigan) | 1,824.68 mi (2,936.53 km) |
| Highland to Caguas (Puerto Rico) | 3,317.20 mi (5,338.51 km) |
| Highland to Cahokia (Illinois) | 1,527.33 mi (2,457.99 km) |
| Highland to Calabasas (California) | 86.04 mi (138.46 km) |
| Highland to Caldwell (Idaho) | 659.29 mi (1,061.03 km) |
| Highland to Caledonia (Wisconsin) | 1,684.12 mi (2,710.33 km) |
| Highland to Calera (Alabama) | 1,745.14 mi (2,808.53 km) |
| Highland to Calexico (California) | 137.83 mi (221.82 km) |
| Highland to Calhoun (Georgia) | 1,831.71 mi (2,947.85 km) |
| Highland to California (Maryland) | 2,267.52 mi (3,649.23 km) |
| Highland to California City (California) | 82.73 mi (133.14 km) |
| Highland to Callaway (Florida) | 1,862.36 mi (2,997.18 km) |
| Highland to Calumet City (Illinois) | 1,686.88 mi (2,714.78 km) |
| Highland to Calverton (Maryland) | 2,238.83 mi (3,603.05 km) |
| Highland to Camano (Washington) | 1,010.28 mi (1,625.89 km) |
