| Naperville to Karditsa | 5,322.90 mi (8,566.38 km) |
| Naperville to Kastoria | 5,243.08 mi (8,437.92 km) |
| Naperville to Katerini | 5,301.86 mi (8,532.51 km) |
| Naperville to Keratsini | 5,456.11 mi (8,780.76 km) |
| Naperville to Kerkyra | 5,233.50 mi (8,422.50 km) |
| Naperville to Kiato | 5,420.52 mi (8,723.49 km) |
| Naperville to Kifisia | 5,458.08 mi (8,783.93 km) |
| Naperville to Kilkis | 5,281.11 mi (8,499.13 km) |
| Naperville to Komotini | 5,369.53 mi (8,641.42 km) |
| Naperville to Korinthos | 5,430.89 mi (8,740.17 km) |
| Naperville to Koropi | 5,469.24 mi (8,801.89 km) |
| Naperville to Korydallos | 5,456.58 mi (8,781.52 km) |
| Naperville to Kos | 5,649.34 mi (9,091.73 km) |
| Naperville to Kozani | 5,273.08 mi (8,486.20 km) |
| Naperville to Lagos | 5,356.86 mi (8,621.04 km) |
