| Barstow to Smyrna (Delaware) | 2,284.55 mi (3,676.62 km) |
| Barstow to Smyrna (Georgia) | 1,848.46 mi (2,974.81 km) |
| Barstow to Smyrna (Tennessee) | 1,713.23 mi (2,757.18 km) |
| Barstow to Snellville (Georgia) | 1,877.40 mi (3,021.39 km) |
| Barstow to Snoqualmie (Washington) | 909.28 mi (1,463.35 km) |
| Barstow to Snyder (Texas) | 937.34 mi (1,508.50 km) |
| Barstow to Socastee (South Carolina) | 2,160.19 mi (3,476.49 km) |
| Barstow to Socorro (Texas) | 661.54 mi (1,064.64 km) |
| Barstow to Soddy-Daisy (Tennessee) | 1,794.97 mi (2,888.73 km) |
| Barstow to Solana Beach (California) | 129.89 mi (209.04 km) |
| Barstow to Soledad (California) | 264.60 mi (425.83 km) |
| Barstow to Solon (Ohio) | 1,972.33 mi (3,174.16 km) |
| Barstow to Somers Point (New Jersey) | 2,337.67 mi (3,762.11 km) |
| Barstow to Somerset (Kentucky) | 1,811.36 mi (2,915.10 km) |
| Barstow to Somerset (New Jersey) | 2,335.80 mi (3,759.10 km) |
