| Romeoville to Kalispell (Montana) | 1,353.37 mi (2,178.04 km) |
| Romeoville to Kaneohe (Hawaii) | 4,218.37 mi (6,788.81 km) |
| Romeoville to Kankakee (Illinois) | 38.59 mi (62.10 km) |
| Romeoville to Kannapolis (North Carolina) | 585.46 mi (942.20 km) |
| Romeoville to Kansas City (Kansas) | 390.17 mi (627.91 km) |
| Romeoville to Kansas City (Missouri) | 381.22 mi (613.52 km) |
| Romeoville to Kapaa (Hawaii) | 4,270.50 mi (6,872.70 km) |
| Romeoville to Kapolei (Hawaii) | 4,235.40 mi (6,816.22 km) |
| Romeoville to Katy (Texas) | 925.15 mi (1,488.89 km) |
| Romeoville to Kaukauna (Wisconsin) | 182.98 mi (294.47 km) |
| Romeoville to Kaysville (Utah) | 1,233.95 mi (1,985.86 km) |
| Romeoville to Kearney (Missouri) | 364.49 mi (586.60 km) |
| Romeoville to Kearney (Nebraska) | 574.50 mi (924.58 km) |
| Romeoville to Kearns (Utah) | 1,241.95 mi (1,998.73 km) |
| Romeoville to Kearny (New Jersey) | 728.56 mi (1,172.51 km) |
