| Naperville to Klaukkala | 4,435.55 mi (7,138.33 km) |
| Naperville to Kokkola | 4,244.82 mi (6,831.39 km) |
| Naperville to Kontiolahti | 4,451.41 mi (7,163.84 km) |
| Naperville to Korsholm | 4,239.41 mi (6,822.67 km) |
| Naperville to Kotka | 4,488.13 mi (7,222.94 km) |
| Naperville to Kouvola | 4,463.70 mi (7,183.62 km) |
| Naperville to Kuhmo | 4,380.16 mi (7,049.19 km) |
| Naperville to Kuopio | 4,394.86 mi (7,072.84 km) |
| Naperville to Kurikka | 4,278.27 mi (6,885.21 km) |
| Naperville to Kuusamo | 4,287.97 mi (6,900.82 km) |
| Naperville to Kuusankoski | 4,459.83 mi (7,177.40 km) |
| Naperville to Lahti | 4,431.78 mi (7,132.26 km) |
| Naperville to Laitila | 4,333.51 mi (6,974.10 km) |
| Naperville to Lapinlahti | 4,366.33 mi (7,026.93 km) |
| Naperville to Lappeenranta | 4,491.39 mi (7,228.20 km) |
