| Prospect Heights to Sestu | 4,783.79 mi (7,698.77 km) |
| Prospect Heights to Settimo Torinese | 4,488.19 mi (7,223.04 km) |
| Prospect Heights to Seveso | 4,521.65 mi (7,276.89 km) |
| Prospect Heights to Sezze | 4,852.16 mi (7,808.80 km) |
| Prospect Heights to Siano | 4,948.07 mi (7,963.15 km) |
| Prospect Heights to Siena | 4,704.61 mi (7,571.34 km) |
| Prospect Heights to Signa | 4,675.78 mi (7,524.94 km) |
| Prospect Heights to Silea | 4,643.39 mi (7,472.81 km) |
| Prospect Heights to Silvi Paese | 4,847.75 mi (7,801.70 km) |
| Prospect Heights to Sinalunga | 4,724.87 mi (7,603.94 km) |
| Prospect Heights to Siniscola | 4,754.81 mi (7,652.12 km) |
| Prospect Heights to Sinnai | 4,788.34 mi (7,706.09 km) |
| Prospect Heights to Siracusa | 5,140.93 mi (8,273.53 km) |
| Prospect Heights to Solaro | 4,520.71 mi (7,275.38 km) |
| Prospect Heights to Soliera | 4,628.80 mi (7,449.34 km) |
