| Hertford to Smyrna (Delaware) | 3,584.90 mi (5,769.33 km) |
| Hertford to Smyrna (Georgia) | 4,201.91 mi (6,762.32 km) |
| Hertford to Smyrna (Tennessee) | 4,179.58 mi (6,726.38 km) |
| Hertford to Snellville (Georgia) | 4,181.48 mi (6,729.45 km) |
| Hertford to Snoqualmie (Washington) | 4,761.31 mi (7,662.59 km) |
| Hertford to Snyder (Texas) | 4,900.15 mi (7,886.03 km) |
| Hertford to Socastee (South Carolina) | 3,985.25 mi (6,413.64 km) |
| Hertford to Socorro (Texas) | 5,154.76 mi (8,295.78 km) |
| Hertford to Soddy-Daisy (Tennessee) | 4,160.31 mi (6,695.36 km) |
| Hertford to Solana Beach (California) | 5,457.68 mi (8,783.28 km) |
| Hertford to Soledad (California) | 5,386.54 mi (8,668.80 km) |
| Hertford to Solon (Ohio) | 3,724.02 mi (5,993.23 km) |
| Hertford to Somers Point (New Jersey) | 3,543.02 mi (5,701.94 km) |
| Hertford to Somerset (Kentucky) | 4,049.69 mi (6,517.35 km) |
| Hertford to Somerset (New Jersey) | 3,486.02 mi (5,610.20 km) |
