| Romeoville to San Diego (California) | 1,698.49 mi (2,733.45 km) |
| Romeoville to San Diego Country Estates (California) | 1,675.53 mi (2,696.51 km) |
| Romeoville to San Dimas (California) | 1,692.01 mi (2,723.02 km) |
| Romeoville to San Fernando (California) | 1,718.56 mi (2,765.76 km) |
| Romeoville to San Francisco (California) | 1,833.19 mi (2,950.23 km) |
| Romeoville to San Gabriel (California) | 1,707.25 mi (2,747.55 km) |
| Romeoville to San Germán (Puerto Rico) | 2,046.83 mi (3,294.05 km) |
| Romeoville to San Jacinto (California) | 1,660.09 mi (2,671.65 km) |
| Romeoville to San Jose (California) | 1,812.96 mi (2,917.68 km) |
| Romeoville to San Juan (Puerto Rico) | 2,064.40 mi (3,322.34 km) |
| Romeoville to San Juan (Texas) | 1,210.58 mi (1,948.24 km) |
| Romeoville to San Juan Capistrano (California) | 1,703.35 mi (2,741.28 km) |
| Romeoville to San Leandro (California) | 1,819.59 mi (2,928.35 km) |
| Romeoville to San Lorenzo (California) | 1,819.00 mi (2,927.39 km) |
| Romeoville to San Luis (Arizona) | 1,588.92 mi (2,557.13 km) |
