| Romeoville to South Fulton (Georgia) | 585.49 mi (942.25 km) |
| Romeoville to South Gate (California) | 1,716.71 mi (2,762.77 km) |
| Romeoville to South Hill (Washington) | 1,715.74 mi (2,761.22 km) |
| Romeoville to South Holland (Illinois) | 25.81 mi (41.53 km) |
| Romeoville to South Houston (Texas) | 918.01 mi (1,477.39 km) |
| Romeoville to South Huntington (New York) | 765.39 mi (1,231.78 km) |
| Romeoville to South Jordan (Utah) | 1,241.62 mi (1,998.19 km) |
| Romeoville to South Lake Tahoe (California) | 1,681.07 mi (2,705.42 km) |
| Romeoville to South Laurel (Maryland) | 618.16 mi (994.83 km) |
| Romeoville to South Lyon (Michigan) | 235.23 mi (378.57 km) |
| Romeoville to South Miami (Florida) | 1,186.92 mi (1,910.17 km) |
| Romeoville to South Miami Heights (Florida) | 1,192.74 mi (1,919.53 km) |
| Romeoville to South Milwaukee (Wisconsin) | 89.28 mi (143.68 km) |
| Romeoville to South Ogden (Utah) | 1,232.92 mi (1,984.19 km) |
| Romeoville to South Pasadena (California) | 1,709.75 mi (2,751.58 km) |
