| Fountain Valley to Solofra | 6,474.93 mi (10,420.39 km) |
| Fountain Valley to Somma Lombardo | 6,019.67 mi (9,687.72 km) |
| Fountain Valley to Somma Vesuviana | 6,459.54 mi (10,395.63 km) |
| Fountain Valley to Sommacampagna | 6,102.91 mi (9,821.68 km) |
| Fountain Valley to Sona | 6,100.63 mi (9,818.01 km) |
| Fountain Valley to Sondrio | 6,031.80 mi (9,707.24 km) |
| Fountain Valley to Sora | 6,387.38 mi (10,279.49 km) |
| Fountain Valley to Sorbolo | 6,119.24 mi (9,847.97 km) |
| Fountain Valley to Soresina | 6,077.35 mi (9,780.55 km) |
| Fountain Valley to Sorisole | 6,047.50 mi (9,732.52 km) |
| Fountain Valley to Sorrento | 6,470.82 mi (10,413.78 km) |
| Fountain Valley to Sorso | 6,266.67 mi (10,085.23 km) |
| Fountain Valley to Sortino | 6,681.30 mi (10,752.51 km) |
| Fountain Valley to Soverato Marina | 6,647.85 mi (10,698.68 km) |
| Fountain Valley to Sovicille | 6,226.71 mi (10,020.93 km) |
