| Romeoville to University Place (Washington) | 1,728.01 mi (2,780.97 km) |
| Romeoville to Upland (California) | 1,684.11 mi (2,710.32 km) |
| Romeoville to Upper Arlington (Ohio) | 285.29 mi (459.13 km) |
| Romeoville to Upper Grand Lagoon (Florida) | 802.84 mi (1,292.04 km) |
| Romeoville to Upper Montclair (New Jersey) | 723.42 mi (1,164.23 km) |
| Romeoville to Urbana (Illinois) | 105.22 mi (169.34 km) |
| Romeoville to Urbana (Maryland) | 586.89 mi (944.51 km) |
| Romeoville to Urbana (Ohio) | 250.22 mi (402.68 km) |
| Romeoville to Urbandale (Iowa) | 293.34 mi (472.08 km) |
| Romeoville to Utica (New York) | 664.28 mi (1,069.05 km) |
| Romeoville to Uvalde (Texas) | 1,078.69 mi (1,735.99 km) |
| Romeoville to Vacaville (California) | 1,795.24 mi (2,889.16 km) |
| Romeoville to Vadnais Heights (Minnesota) | 344.11 mi (553.80 km) |
| Romeoville to Vail (Arizona) | 1,408.96 mi (2,267.50 km) |
| Romeoville to Valdosta (Georgia) | 791.54 mi (1,273.86 km) |
