| Healdsburg to Smyrna (Delaware) | 2,509.82 mi (4,039.17 km) |
| Healdsburg to Smyrna (Georgia) | 2,146.35 mi (3,454.21 km) |
| Healdsburg to Smyrna (Tennessee) | 1,992.74 mi (3,207.00 km) |
| Healdsburg to Snellville (Georgia) | 2,174.16 mi (3,498.97 km) |
| Healdsburg to Snoqualmie (Washington) | 617.56 mi (993.86 km) |
| Healdsburg to Snyder (Texas) | 1,294.39 mi (2,083.12 km) |
| Healdsburg to Socastee (South Carolina) | 2,446.99 mi (3,938.04 km) |
| Healdsburg to Socorro (Texas) | 1,052.86 mi (1,694.42 km) |
| Healdsburg to Soddy-Daisy (Tennessee) | 2,079.78 mi (3,347.07 km) |
| Healdsburg to Solana Beach (California) | 499.72 mi (804.22 km) |
| Healdsburg to Soledad (California) | 172.13 mi (277.01 km) |
| Healdsburg to Solon (Ohio) | 2,179.84 mi (3,508.12 km) |
| Healdsburg to Somers Point (New Jersey) | 2,561.25 mi (4,121.93 km) |
| Healdsburg to Somerset (Kentucky) | 2,074.54 mi (3,338.65 km) |
| Healdsburg to Somerset (New Jersey) | 2,546.78 mi (4,098.64 km) |
