| Naperville to Jicin | 4,579.59 mi (7,370.14 km) |
| Naperville to Jihlava | 4,631.92 mi (7,454.35 km) |
| Naperville to Jindrichuv Hradec | 4,621.92 mi (7,438.26 km) |
| Naperville to Jirkov | 4,510.11 mi (7,258.32 km) |
| Naperville to Kadan | 4,508.94 mi (7,256.43 km) |
| Naperville to Karlovy Vary | 4,500.69 mi (7,243.17 km) |
| Naperville to Karvina | 4,715.07 mi (7,588.17 km) |
| Naperville to Kladno | 4,547.62 mi (7,318.69 km) |
| Naperville to Klasterec nad Ohri | 4,505.04 mi (7,250.16 km) |
| Naperville to Klatovy | 4,550.14 mi (7,322.74 km) |
| Naperville to Kolin | 4,591.54 mi (7,389.36 km) |
| Naperville to Koprivnice | 4,712.60 mi (7,584.19 km) |
| Naperville to Kralupy nad Vltavou | 4,551.31 mi (7,324.62 km) |
| Naperville to Kraluv Dvur | 4,553.61 mi (7,328.33 km) |
| Naperville to Krnov | 4,675.71 mi (7,524.83 km) |
