| Niagara Falls to Santa Venerina | 4,693.17 mi (7,552.93 km) |
| Niagara Falls to Santeramo in Colle | 4,629.33 mi (7,450.18 km) |
| Niagara Falls to Santo Stefano di Magra | 4,210.44 mi (6,776.05 km) |
| Niagara Falls to Santo Stino di Livenza | 4,262.93 mi (6,860.53 km) |
| Niagara Falls to Sarezzo | 4,166.04 mi (6,704.59 km) |
| Niagara Falls to Sarno | 4,539.29 mi (7,305.29 km) |
| Niagara Falls to Saronno | 4,119.57 mi (6,629.80 km) |
| Niagara Falls to Sarzana | 4,214.16 mi (6,782.04 km) |
| Niagara Falls to Sassari | 4,285.16 mi (6,896.31 km) |
| Niagara Falls to Sasso Marconi | 4,256.34 mi (6,849.92 km) |
| Niagara Falls to Sassuolo | 4,231.48 mi (6,809.91 km) |
| Niagara Falls to Sava | 4,679.39 mi (7,530.75 km) |
| Niagara Falls to Saviano | 4,530.97 mi (7,291.89 km) |
| Niagara Falls to Savigliano | 4,097.47 mi (6,594.23 km) |
| Niagara Falls to Savignano sul Panaro | 4,244.26 mi (6,830.47 km) |
