| Niagara Falls to San Baudilio de Llobregat | 3,976.46 mi (6,399.49 km) |
| Niagara Falls to San Celoni | 3,983.95 mi (6,411.54 km) |
| Niagara Falls to San Cugat del Valles | 3,973.81 mi (6,395.23 km) |
| Niagara Falls to San Fausto de Campcentellas | 3,979.49 mi (6,404.37 km) |
| Niagara Falls to San Feliu de Guixols | 4,004.49 mi (6,444.60 km) |
| Niagara Falls to San Feliu de Llobregat | 3,975.21 mi (6,397.48 km) |
| Niagara Falls to San Fernando | 3,771.11 mi (6,069.02 km) |
| Niagara Falls to San Fernando de Henares | 3,757.37 mi (6,046.90 km) |
| Niagara Falls to San Fructuoso de Bages | 3,954.52 mi (6,364.18 km) |
| Niagara Falls to San Javier | 3,974.55 mi (6,396.42 km) |
| Niagara Falls to San Juan de Alicante | 3,971.00 mi (6,390.71 km) |
| Niagara Falls to San Juan de Aznalfarache | 3,747.90 mi (6,031.66 km) |
| Niagara Falls to San Juan de Vilasar | 3,986.28 mi (6,415.29 km) |
| Niagara Falls to San Juan del Puerto | 3,711.01 mi (5,972.29 km) |
| Niagara Falls to San Juan Despi | 3,976.38 mi (6,399.37 km) |
