| San Juan to Security-Widefield (Colorado) | 2,705.15 mi (4,353.51 km) |
| San Juan to Sedalia (Missouri) | 2,149.94 mi (3,459.99 km) |
| San Juan to Sedro-Woolley (Washington) | 3,737.88 mi (6,015.54 km) |
| San Juan to Seguin (Texas) | 2,148.42 mi (3,457.54 km) |
| San Juan to Selden (New York) | 1,606.99 mi (2,586.20 km) |
| San Juan to Selma (Alabama) | 1,622.77 mi (2,611.60 km) |
| San Juan to Selma (California) | 3,465.03 mi (5,576.43 km) |
| San Juan to Selma (Texas) | 2,168.55 mi (3,489.95 km) |
| San Juan to Seminole (Florida) | 1,244.93 mi (2,003.53 km) |
| San Juan to Seven Hills (Ohio) | 1,836.07 mi (2,954.87 km) |
| San Juan to Seven Oaks (South Carolina) | 1,425.69 mi (2,294.43 km) |
| San Juan to Severn (Maryland) | 1,568.05 mi (2,523.53 km) |
| San Juan to Severna Park (Maryland) | 1,561.99 mi (2,513.77 km) |
| San Juan to Sevierville (Tennessee) | 1,612.66 mi (2,595.32 km) |
| San Juan to Seymour (Indiana) | 1,851.47 mi (2,979.65 km) |
