| Romeoville to Oak Grove (South Carolina) | 650.43 mi (1,046.76 km) |
| Romeoville to Oak Harbor (Washington) | 1,733.72 mi (2,790.16 km) |
| Romeoville to Oak Hills (Oregon) | 1,745.59 mi (2,809.25 km) |
| Romeoville to Oak Lawn (Illinois) | 18.78 mi (30.22 km) |
| Romeoville to Oak Park (California) | 1,738.67 mi (2,798.12 km) |
| Romeoville to Oak Park (Illinois) | 23.80 mi (38.30 km) |
| Romeoville to Oak Park (Michigan) | 258.74 mi (416.39 km) |
| Romeoville to Oak Ridge (Florida) | 983.83 mi (1,583.32 km) |
| Romeoville to Oak Ridge (New Jersey) | 706.21 mi (1,136.53 km) |
| Romeoville to Oak Ridge (Tennessee) | 441.88 mi (711.13 km) |
| Romeoville to Oakdale (California) | 1,750.61 mi (2,817.33 km) |
| Romeoville to Oakdale (Minnesota) | 336.89 mi (542.17 km) |
| Romeoville to Oakland (California) | 1,820.63 mi (2,930.02 km) |
| Romeoville to Oakland (New Jersey) | 719.45 mi (1,157.84 km) |
| Romeoville to Oakland Park (Florida) | 1,159.61 mi (1,866.21 km) |
