| Prospect Heights to Kihei (Hawaii) | 4,183.18 mi (6,732.18 km) |
| Prospect Heights to Kilgore (Texas) | 770.79 mi (1,240.46 km) |
| Prospect Heights to Killeen (Texas) | 934.73 mi (1,504.30 km) |
| Prospect Heights to King City (California) | 1,812.75 mi (2,917.33 km) |
| Prospect Heights to King of Prussia (Pennsylvania) | 667.06 mi (1,073.52 km) |
| Prospect Heights to Kingman (Arizona) | 1,478.65 mi (2,379.66 km) |
| Prospect Heights to Kings Mountain (North Carolina) | 592.13 mi (952.94 km) |
| Prospect Heights to Kings Park (New York) | 763.34 mi (1,228.47 km) |
| Prospect Heights to Kings Park West (Virginia) | 602.75 mi (970.04 km) |
| Prospect Heights to Kingsburg (California) | 1,723.88 mi (2,774.31 km) |
| Prospect Heights to Kingsland (Georgia) | 851.90 mi (1,371.01 km) |
| Prospect Heights to Kingsport (Tennessee) | 480.89 mi (773.91 km) |
| Prospect Heights to Kingston (New York) | 714.37 mi (1,149.67 km) |
| Prospect Heights to Kingston (Pennsylvania) | 623.39 mi (1,003.25 km) |
| Prospect Heights to Kingstowne (Virginia) | 611.69 mi (984.42 km) |
