| Fort Collins to Kluczbork | 5,248.42 mi (8,446.52 km) |
| Fort Collins to Knurow | 5,301.93 mi (8,532.63 km) |
| Fort Collins to Kobylka | 5,259.23 mi (8,463.91 km) |
| Fort Collins to Kokoszki | 5,080.50 mi (8,176.28 km) |
| Fort Collins to Kolbuszowa | 5,386.77 mi (8,669.16 km) |
| Fort Collins to Kolno | 5,220.61 mi (8,401.75 km) |
| Fort Collins to Kolo | 5,196.55 mi (8,363.04 km) |
| Fort Collins to Kolobrzeg | 5,010.43 mi (8,063.50 km) |
| Fort Collins to Koluszki | 5,252.41 mi (8,452.94 km) |
| Fort Collins to Komorniki | 5,138.91 mi (8,270.28 km) |
| Fort Collins to Konin | 5,185.51 mi (8,345.27 km) |
| Fort Collins to Konskie | 5,298.60 mi (8,527.28 km) |
| Fort Collins to Konstancin-Jeziorna | 5,270.40 mi (8,481.89 km) |
| Fort Collins to Konstantynow Lodzki | 5,239.55 mi (8,432.23 km) |
| Fort Collins to Koronowo | 5,119.20 mi (8,238.56 km) |
