| Grass Valley to Sestu | 6,162.90 mi (9,918.22 km) |
| Grass Valley to Settimo Torinese | 5,799.59 mi (9,333.54 km) |
| Grass Valley to Seveso | 5,811.39 mi (9,352.54 km) |
| Grass Valley to Sezze | 6,158.61 mi (9,911.33 km) |
| Grass Valley to Siano | 6,245.35 mi (10,050.92 km) |
| Grass Valley to Siena | 6,004.95 mi (9,664.03 km) |
| Grass Valley to Signa | 5,971.99 mi (9,610.99 km) |
| Grass Valley to Silea | 5,899.29 mi (9,493.99 km) |
| Grass Valley to Silvi Paese | 6,127.80 mi (9,861.73 km) |
| Grass Valley to Sinalunga | 6,022.26 mi (9,691.89 km) |
| Grass Valley to Siniscola | 6,110.64 mi (9,834.12 km) |
| Grass Valley to Sinnai | 6,166.24 mi (9,923.60 km) |
| Grass Valley to Siracusa | 6,479.91 mi (10,428.41 km) |
| Grass Valley to Solaro | 5,811.43 mi (9,352.60 km) |
| Grass Valley to Soliera | 5,913.08 mi (9,516.19 km) |
