| Prospect Heights to Kelkheim (Taunus) | 4,317.93 mi (6,949.04 km) |
| Prospect Heights to Kelsterbach | 4,323.86 mi (6,958.58 km) |
| Prospect Heights to Kemberg | 4,403.05 mi (7,086.02 km) |
| Prospect Heights to Kempen | 4,197.34 mi (6,754.97 km) |
| Prospect Heights to Kempten | 4,482.31 mi (7,213.59 km) |
| Prospect Heights to Kenzingen | 4,367.58 mi (7,028.94 km) |
| Prospect Heights to Kerpen | 4,225.68 mi (6,800.58 km) |
| Prospect Heights to Ketsch | 4,350.83 mi (7,001.99 km) |
| Prospect Heights to Kevelaer | 4,183.21 mi (6,732.22 km) |
| Prospect Heights to Kiel | 4,218.68 mi (6,789.31 km) |
| Prospect Heights to Kierspe | 4,247.84 mi (6,836.24 km) |
| Prospect Heights to Kirchhain | 4,308.94 mi (6,934.57 km) |
| Prospect Heights to Kirchheim bei Munchen | 4,518.04 mi (7,271.08 km) |
| Prospect Heights to Kirchheim unter Teck | 4,413.20 mi (7,102.36 km) |
| Prospect Heights to Kirchhundem | 4,267.89 mi (6,868.50 km) |
