| Prospect Heights to Karlskoga | 4,167.64 mi (6,707.17 km) |
| Prospect Heights to Karlskrona | 4,324.52 mi (6,959.64 km) |
| Prospect Heights to Karlstad | 4,136.08 mi (6,656.38 km) |
| Prospect Heights to Katrineholm | 4,229.89 mi (6,807.35 km) |
| Prospect Heights to Kavlinge | 4,260.63 mi (6,856.82 km) |
| Prospect Heights to Kinna | 4,181.09 mi (6,728.82 km) |
| Prospect Heights to Kiruna | 3,990.77 mi (6,422.52 km) |
| Prospect Heights to Klippansbruk | 4,249.30 mi (6,838.58 km) |
| Prospect Heights to Koping | 4,203.31 mi (6,764.57 km) |
| Prospect Heights to Kristianstad | 4,283.82 mi (6,894.15 km) |
| Prospect Heights to Kristinehamn | 4,157.12 mi (6,690.25 km) |
| Prospect Heights to Kumla | 4,194.08 mi (6,749.71 km) |
| Prospect Heights to Kungalv | 4,145.75 mi (6,671.95 km) |
| Prospect Heights to Kungsangen | 4,255.34 mi (6,848.31 km) |
| Prospect Heights to Kungsbacka | 4,163.13 mi (6,699.91 km) |
