| Romeoville to Stephenville (Texas) | 856.55 mi (1,378.49 km) |
| Romeoville to Sterling (Colorado) | 787.60 mi (1,267.52 km) |
| Romeoville to Sterling (Illinois) | 83.12 mi (133.77 km) |
| Romeoville to Sterling (Virginia) | 591.44 mi (951.83 km) |
| Romeoville to Sterling Heights (Michigan) | 267.95 mi (431.22 km) |
| Romeoville to Steubenville (Ohio) | 397.97 mi (640.48 km) |
| Romeoville to Stevens Point (Wisconsin) | 212.82 mi (342.51 km) |
| Romeoville to Stevenson Ranch (California) | 1,723.30 mi (2,773.38 km) |
| Romeoville to Stillwater (Minnesota) | 335.36 mi (539.71 km) |
| Romeoville to Stillwater (Oklahoma) | 613.75 mi (987.74 km) |
| Romeoville to Stockbridge (Georgia) | 598.67 mi (963.47 km) |
| Romeoville to Stockton (California) | 1,769.74 mi (2,848.12 km) |
| Romeoville to Stone Ridge (Virginia) | 585.84 mi (942.82 km) |
| Romeoville to Stonecrest (Georgia) | 590.17 mi (949.79 km) |
| Romeoville to Stony Brook (New York) | 778.16 mi (1,252.32 km) |
