| Niagara Falls to Sereflikochisar | 5,374.54 mi (8,649.49 km) |
| Niagara Falls to Serik | 5,382.59 mi (8,662.44 km) |
| Niagara Falls to Serinhisar | 5,278.96 mi (8,495.66 km) |
| Niagara Falls to Serinyol | 5,603.99 mi (9,018.75 km) |
| Niagara Falls to Seydisehir | 5,386.73 mi (8,669.10 km) |
| Niagara Falls to Seyhan | 5,540.16 mi (8,916.02 km) |
| Niagara Falls to Seyitgazi | 5,243.12 mi (8,437.99 km) |
| Niagara Falls to Siirt | 5,728.01 mi (9,218.34 km) |
| Niagara Falls to Sile | 5,118.74 mi (8,237.82 km) |
| Niagara Falls to Silifke | 5,518.23 mi (8,880.73 km) |
| Niagara Falls to Silivri | 5,072.23 mi (8,162.97 km) |
| Niagara Falls to Silopi | 5,782.41 mi (9,305.89 km) |
| Niagara Falls to Simav | 5,195.35 mi (8,361.11 km) |
| Niagara Falls to Sinanpasa | 5,260.10 mi (8,465.32 km) |
| Niagara Falls to Sindirgi | 5,156.63 mi (8,298.79 km) |
