| Prospect Heights to Kamen | 4,234.29 mi (6,814.44 km) |
| Prospect Heights to Kamenz | 4,475.02 mi (7,201.85 km) |
| Prospect Heights to Kamp-Lintfort | 4,196.58 mi (6,753.75 km) |
| Prospect Heights to Kandel | 4,349.32 mi (6,999.55 km) |
| Prospect Heights to Kappeln | 4,199.01 mi (6,757.65 km) |
| Prospect Heights to Karben | 4,326.00 mi (6,962.03 km) |
| Prospect Heights to Karlsdorf-Neuthard | 4,360.13 mi (7,016.95 km) |
| Prospect Heights to Karlsfeld | 4,505.68 mi (7,251.19 km) |
| Prospect Heights to Karlsruhe | 4,359.84 mi (7,016.48 km) |
| Prospect Heights to Kassel | 4,310.72 mi (6,937.44 km) |
| Prospect Heights to Kaufbeuren | 4,487.88 mi (7,222.54 km) |
| Prospect Heights to Kaufering | 4,489.39 mi (7,224.98 km) |
| Prospect Heights to Kaufungen | 4,316.39 mi (6,946.55 km) |
| Prospect Heights to Kehl | 4,354.87 mi (7,008.49 km) |
| Prospect Heights to Kelheim | 4,491.83 mi (7,228.90 km) |
