| Barstow to Sestu | 6,267.39 mi (10,086.38 km) |
| Barstow to Settimo Torinese | 5,922.37 mi (9,531.14 km) |
| Barstow to Seveso | 5,940.74 mi (9,560.70 km) |
| Barstow to Sezze | 6,286.26 mi (10,116.75 km) |
| Barstow to Siano | 6,376.58 mi (10,262.11 km) |
| Barstow to Siena | 6,133.00 mi (9,870.12 km) |
| Barstow to Signa | 6,100.97 mi (9,818.56 km) |
| Barstow to Silea | 6,039.28 mi (9,719.29 km) |
| Barstow to Silvi Paese | 6,263.05 mi (10,079.40 km) |
| Barstow to Sinalunga | 6,151.36 mi (9,899.66 km) |
| Barstow to Siniscola | 6,222.35 mi (10,013.91 km) |
| Barstow to Sinnai | 6,271.16 mi (10,092.46 km) |
| Barstow to Siracusa | 6,600.27 mi (10,622.10 km) |
| Barstow to Solaro | 5,940.49 mi (9,560.30 km) |
| Barstow to Soliera | 6,045.02 mi (9,728.53 km) |
