| Rancho Cucamonga to Sestu | 6,325.89 mi (10,180.54 km) |
| Rancho Cucamonga to Settimo Torinese | 5,981.27 mi (9,625.93 km) |
| Rancho Cucamonga to Seveso | 5,999.74 mi (9,655.64 km) |
| Rancho Cucamonga to Sezze | 6,345.21 mi (10,211.62 km) |
| Rancho Cucamonga to Siano | 6,435.57 mi (10,357.05 km) |
| Rancho Cucamonga to Siena | 6,191.97 mi (9,965.01 km) |
| Rancho Cucamonga to Signa | 6,159.95 mi (9,913.48 km) |
| Rancho Cucamonga to Silea | 6,098.38 mi (9,814.39 km) |
| Rancho Cucamonga to Silvi Paese | 6,322.09 mi (10,174.42 km) |
| Rancho Cucamonga to Sinalunga | 6,210.34 mi (9,994.57 km) |
| Rancho Cucamonga to Siniscola | 6,281.03 mi (10,108.34 km) |
| Rancho Cucamonga to Sinnai | 6,329.68 mi (10,186.63 km) |
| Rancho Cucamonga to Siracusa | 6,659.08 mi (10,716.75 km) |
| Rancho Cucamonga to Solaro | 5,999.48 mi (9,655.23 km) |
| Rancho Cucamonga to Soliera | 6,104.04 mi (9,823.51 km) |
