| Romeoville to Sangeorgiu de Mures | 5,074.14 mi (8,166.04 km) |
| Romeoville to Sangeorz-Bai | 5,042.09 mi (8,114.46 km) |
| Romeoville to Sannicolau Mare | 4,962.21 mi (7,985.90 km) |
| Romeoville to Santana | 4,980.47 mi (8,015.29 km) |
| Romeoville to Satu Mare | 4,961.48 mi (7,984.73 km) |
| Romeoville to Scobinti | 5,116.57 mi (8,234.33 km) |
| Romeoville to Scornicesti | 5,172.35 mi (8,324.10 km) |
| Romeoville to Sebes | 5,071.38 mi (8,161.59 km) |
| Romeoville to Seini | 4,976.92 mi (8,009.58 km) |
| Romeoville to Sfantu-Gheorghe | 5,152.44 mi (8,292.06 km) |
| Romeoville to Sibiu | 5,099.59 mi (8,206.99 km) |
| Romeoville to Sighetu Marmatiei | 4,988.93 mi (8,028.91 km) |
| Romeoville to Sighisoara | 5,101.26 mi (8,209.68 km) |
| Romeoville to Simeria | 5,057.03 mi (8,138.51 km) |
| Romeoville to Sinaia | 5,169.37 mi (8,319.30 km) |
