| Herndon to Savannah (Georgia) | 524.83 mi (844.63 km) |
| Herndon to Sayreville (New Jersey) | 192.80 mi (310.28 km) |
| Herndon to Sayville (New York) | 259.12 mi (417.02 km) |
| Herndon to Scaggsville (Maryland) | 29.45 mi (47.40 km) |
| Herndon to Scarsdale (New York) | 236.61 mi (380.79 km) |
| Herndon to Schaumburg (Illinois) | 599.96 mi (965.55 km) |
| Herndon to Schenectady (New York) | 320.51 mi (515.82 km) |
| Herndon to Schererville (Indiana) | 557.91 mi (897.87 km) |
| Herndon to Schertz (Texas) | 1,352.50 mi (2,176.64 km) |
| Herndon to Schiller Park (Illinois) | 587.97 mi (946.25 km) |
| Herndon to Schofield Barracks (Hawaii) | 4,812.79 mi (7,745.44 km) |
| Herndon to Scotchtown (New York) | 235.29 mi (378.66 km) |
| Herndon to Scottdale (Georgia) | 523.30 mi (842.17 km) |
| Herndon to Scotts Valley (California) | 2,408.44 mi (3,876.01 km) |
| Herndon to Scottsbluff (Nebraska) | 1,390.99 mi (2,238.59 km) |
