| Chicago Heights to Sesimbra | 4,013.37 mi (6,458.89 km) |
| Chicago Heights to Setubal | 4,020.25 mi (6,469.96 km) |
| Chicago Heights to Sever do Vouga | 3,968.93 mi (6,387.37 km) |
| Chicago Heights to Silves | 4,088.63 mi (6,580.01 km) |
| Chicago Heights to Sines | 4,041.46 mi (6,504.10 km) |
| Chicago Heights to Sintra | 3,987.59 mi (6,417.40 km) |
| Chicago Heights to Sobrado de Paiva | 3,963.40 mi (6,378.47 km) |
| Chicago Heights to Sobral de Monte Agraco | 3,991.08 mi (6,423.03 km) |
| Chicago Heights to Soure | 3,979.83 mi (6,404.91 km) |
| Chicago Heights to Tabua | 3,997.01 mi (6,432.57 km) |
| Chicago Heights to Tavira | 4,128.30 mi (6,643.85 km) |
| Chicago Heights to Tomar | 4,005.19 mi (6,445.73 km) |
| Chicago Heights to Tondela | 3,989.21 mi (6,420.02 km) |
| Chicago Heights to Torre de Moncorvo | 4,009.23 mi (6,452.23 km) |
| Chicago Heights to Torres Novas | 4,004.38 mi (6,444.43 km) |
