| Grass Valley to Solofra | 6,247.95 mi (10,055.11 km) |
| Grass Valley to Somma Lombardo | 5,796.57 mi (9,328.69 km) |
| Grass Valley to Somma Vesuviana | 6,233.99 mi (10,032.64 km) |
| Grass Valley to Sommacampagna | 5,873.67 mi (9,452.75 km) |
| Grass Valley to Sona | 5,871.32 mi (9,448.98 km) |
| Grass Valley to Sondrio | 5,802.92 mi (9,338.90 km) |
| Grass Valley to Sora | 6,161.88 mi (9,916.58 km) |
| Grass Valley to Sorbolo | 5,893.46 mi (9,484.61 km) |
| Grass Valley to Soresina | 5,851.90 mi (9,417.73 km) |
| Grass Valley to Sorisole | 5,821.00 mi (9,368.00 km) |
| Grass Valley to Sorrento | 6,246.39 mi (10,052.59 km) |
| Grass Valley to Sorso | 6,063.45 mi (9,758.18 km) |
| Grass Valley to Sortino | 6,466.71 mi (10,407.16 km) |
| Grass Valley to Soverato Marina | 6,421.77 mi (10,334.84 km) |
| Grass Valley to Sovicille | 6,004.10 mi (9,662.67 km) |
