| Niagara Falls to Sacile | 4,246.62 mi (6,834.27 km) |
| Niagara Falls to Sala Consilina | 4,597.78 mi (7,399.42 km) |
| Niagara Falls to Salemi | 4,586.67 mi (7,381.52 km) |
| Niagara Falls to Salerno | 4,550.93 mi (7,324.01 km) |
| Niagara Falls to Salo | 4,181.44 mi (6,729.37 km) |
| Niagara Falls to Salsomaggiore Terme | 4,188.41 mi (6,740.60 km) |
| Niagara Falls to Saluzzo | 4,091.69 mi (6,584.94 km) |
| Niagara Falls to Salzano | 4,247.92 mi (6,836.37 km) |
| Niagara Falls to Samarate | 4,109.51 mi (6,613.62 km) |
| Niagara Falls to San Benedetto del Tronto | 4,421.57 mi (7,115.82 km) |
| Niagara Falls to San Biagio di Callalta | 4,252.65 mi (6,843.98 km) |
| Niagara Falls to San Bonifacio | 4,219.39 mi (6,790.46 km) |
| Niagara Falls to San Casciano in Val di Pesa | 4,282.44 mi (6,891.92 km) |
| Niagara Falls to San Cataldo | 4,652.05 mi (7,486.75 km) |
| Niagara Falls to San Cesareo | 4,422.41 mi (7,117.19 km) |
