| Glenmont to Smyrna (Delaware) | 78.57 mi (126.45 km) |
| Glenmont to Smyrna (Georgia) | 548.91 mi (883.38 km) |
| Glenmont to Smyrna (Tennessee) | 561.59 mi (903.78 km) |
| Glenmont to Snellville (Georgia) | 528.09 mi (849.87 km) |
| Glenmont to Snoqualmie (Washington) | 2,292.87 mi (3,690.02 km) |
| Glenmont to Snyder (Texas) | 1,401.30 mi (2,255.18 km) |
| Glenmont to Socastee (South Carolina) | 387.56 mi (623.72 km) |
| Glenmont to Socorro (Texas) | 1,715.87 mi (2,761.43 km) |
| Glenmont to Soddy-Daisy (Tennessee) | 518.97 mi (835.19 km) |
| Glenmont to Solana Beach (California) | 2,266.77 mi (3,648.02 km) |
| Glenmont to Soledad (California) | 2,402.60 mi (3,866.61 km) |
| Glenmont to Solon (Ohio) | 281.60 mi (453.19 km) |
| Glenmont to Somers Point (New Jersey) | 131.77 mi (212.06 km) |
| Glenmont to Somerset (Kentucky) | 433.54 mi (697.71 km) |
| Glenmont to Somerset (New Jersey) | 167.75 mi (269.97 km) |
