| San Juan to Smyrna (Delaware) | 1,552.69 mi (2,498.81 km) |
| San Juan to Smyrna (Georgia) | 1,560.89 mi (2,512.01 km) |
| San Juan to Smyrna (Tennessee) | 1,740.69 mi (2,801.37 km) |
| San Juan to Snellville (Georgia) | 1,537.72 mi (2,474.71 km) |
| San Juan to Snoqualmie (Washington) | 3,704.87 mi (5,962.41 km) |
| San Juan to Snyder (Texas) | 2,372.28 mi (3,817.82 km) |
| San Juan to Socastee (South Carolina) | 1,324.67 mi (2,131.85 km) |
| San Juan to Socorro (Texas) | 2,660.09 mi (4,281.00 km) |
| San Juan to Soddy-Daisy (Tennessee) | 1,650.77 mi (2,656.66 km) |
| San Juan to Solana Beach (California) | 3,308.65 mi (5,324.76 km) |
| San Juan to Soledad (California) | 3,559.71 mi (5,728.80 km) |
| San Juan to Solon (Ohio) | 1,829.55 mi (2,944.37 km) |
| San Juan to Somers Point (New Jersey) | 1,533.13 mi (2,467.34 km) |
| San Juan to Somerset (Kentucky) | 1,711.72 mi (2,754.75 km) |
| San Juan to Somerset (New Jersey) | 1,607.82 mi (2,587.54 km) |
