| Romeoville to Santarem | 4,023.13 mi (6,474.60 km) |
| Romeoville to Santiago do Cacem | 4,065.20 mi (6,542.30 km) |
| Romeoville to Santo Andre | 4,061.68 mi (6,536.65 km) |
| Romeoville to Santo Tirso | 3,961.35 mi (6,375.17 km) |
| Romeoville to Sao Bras de Alportel | 4,134.47 mi (6,653.79 km) |
| Romeoville to Sao Felix da Marinha | 3,964.34 mi (6,379.99 km) |
| Romeoville to Sao Joao da Madeira | 3,975.07 mi (6,397.25 km) |
| Romeoville to Sao Joao de Ver | 3,970.32 mi (6,389.61 km) |
| Romeoville to Sao Mamede de Infesta | 3,959.79 mi (6,372.66 km) |
| Romeoville to Sao Pedro do Sul | 3,999.29 mi (6,436.23 km) |
| Romeoville to Satao | 4,015.02 mi (6,461.55 km) |
| Romeoville to Seia | 4,027.14 mi (6,481.06 km) |
| Romeoville to Senhora da Hora | 3,957.94 mi (6,369.70 km) |
| Romeoville to Serpa | 4,119.13 mi (6,629.10 km) |
| Romeoville to Serta | 4,030.48 mi (6,486.42 km) |
