| Prospect Heights to Krosno Odrzanskie | 4,477.59 mi (7,205.99 km) |
| Prospect Heights to Krotoszyn | 4,571.11 mi (7,356.50 km) |
| Prospect Heights to Kruszwica | 4,557.87 mi (7,335.19 km) |
| Prospect Heights to Krynica | 4,790.39 mi (7,709.39 km) |
| Prospect Heights to Krzeszowice | 4,713.17 mi (7,585.11 km) |
| Prospect Heights to Kudowa-Zdroj | 4,583.90 mi (7,377.08 km) |
| Prospect Heights to Kutno | 4,611.11 mi (7,420.87 km) |
| Prospect Heights to Kwidzyn | 4,531.50 mi (7,292.75 km) |
| Prospect Heights to Lancut | 4,802.93 mi (7,729.57 km) |
| Prospect Heights to Lapy | 4,689.58 mi (7,547.15 km) |
| Prospect Heights to Lask | 4,631.76 mi (7,454.09 km) |
| Prospect Heights to Laziska Gorne | 4,685.91 mi (7,541.24 km) |
| Prospect Heights to Lebork | 4,459.15 mi (7,176.31 km) |
| Prospect Heights to Leczna | 4,767.07 mi (7,671.85 km) |
| Prospect Heights to Leczyca | 4,613.72 mi (7,425.07 km) |
