| Chicago Heights to Solofra | 4,967.02 mi (7,993.65 km) |
| Chicago Heights to Somma Lombardo | 4,517.88 mi (7,270.83 km) |
| Chicago Heights to Somma Vesuviana | 4,948.66 mi (7,964.10 km) |
| Chicago Heights to Sommacampagna | 4,613.81 mi (7,425.21 km) |
| Chicago Heights to Sona | 4,611.80 mi (7,421.97 km) |
| Chicago Heights to Sondrio | 4,544.38 mi (7,313.47 km) |
| Chicago Heights to Sora | 4,878.81 mi (7,851.68 km) |
| Chicago Heights to Sorbolo | 4,620.68 mi (7,436.27 km) |
| Chicago Heights to Soresina | 4,579.44 mi (7,369.90 km) |
| Chicago Heights to Sorisole | 4,553.38 mi (7,327.95 km) |
| Chicago Heights to Sorrento | 4,956.86 mi (7,977.30 km) |
| Chicago Heights to Sorso | 4,710.74 mi (7,581.20 km) |
| Chicago Heights to Sortino | 5,138.04 mi (8,268.88 km) |
| Chicago Heights to Soverato Marina | 5,132.04 mi (8,259.22 km) |
| Chicago Heights to Sovicille | 4,716.50 mi (7,590.47 km) |
