| Romeoville to Karditsa | 5,325.71 mi (8,570.90 km) |
| Romeoville to Kastoria | 5,245.96 mi (8,442.55 km) |
| Romeoville to Katerini | 5,304.81 mi (8,537.26 km) |
| Romeoville to Keratsini | 5,458.91 mi (8,785.27 km) |
| Romeoville to Kerkyra | 5,236.18 mi (8,426.81 km) |
| Romeoville to Kiato | 5,423.25 mi (8,727.88 km) |
| Romeoville to Kifisia | 5,460.91 mi (8,788.48 km) |
| Romeoville to Kilkis | 5,284.17 mi (8,504.05 km) |
| Romeoville to Komotini | 5,372.79 mi (8,646.67 km) |
| Romeoville to Korinthos | 5,433.63 mi (8,744.58 km) |
| Romeoville to Koropi | 5,472.05 mi (8,806.42 km) |
| Romeoville to Korydallos | 5,459.38 mi (8,786.03 km) |
| Romeoville to Kos | 5,652.32 mi (9,096.53 km) |
| Romeoville to Kozani | 5,275.98 mi (8,490.86 km) |
| Romeoville to Lagos | 5,360.09 mi (8,626.24 km) |
