| Prospect Heights to Kluczbork | 4,627.80 mi (7,447.73 km) |
| Prospect Heights to Knurow | 4,677.29 mi (7,527.38 km) |
| Prospect Heights to Kobylka | 4,665.93 mi (7,509.09 km) |
| Prospect Heights to Kokoszki | 4,490.96 mi (7,227.50 km) |
| Prospect Heights to Kolbuszowa | 4,779.09 mi (7,691.21 km) |
| Prospect Heights to Kolno | 4,640.56 mi (7,468.27 km) |
| Prospect Heights to Kolo | 4,588.56 mi (7,384.57 km) |
| Prospect Heights to Kolobrzeg | 4,404.90 mi (7,089.01 km) |
| Prospect Heights to Koluszki | 4,646.64 mi (7,478.05 km) |
| Prospect Heights to Komorniki | 4,521.66 mi (7,276.91 km) |
| Prospect Heights to Konin | 4,575.77 mi (7,363.98 km) |
| Prospect Heights to Konskie | 4,691.45 mi (7,550.16 km) |
| Prospect Heights to Konstancin-Jeziorna | 4,674.52 mi (7,522.91 km) |
| Prospect Heights to Konstantynow Lodzki | 4,631.31 mi (7,453.38 km) |
| Prospect Heights to Koronowo | 4,517.48 mi (7,270.18 km) |
