| Niagara Falls to Muro del Alcoy | 3,957.26 mi (6,368.59 km) |
| Niagara Falls to Naron | 3,447.40 mi (5,548.05 km) |
| Niagara Falls to Navalcarnero | 3,740.26 mi (6,019.36 km) |
| Niagara Falls to Navalmoral de la Mata | 3,682.98 mi (5,927.19 km) |
| Niagara Falls to Nerja | 3,870.92 mi (6,229.65 km) |
| Niagara Falls to Nigran | 3,460.15 mi (5,568.58 km) |
| Niagara Falls to Nijar | 3,941.73 mi (6,343.61 km) |
| Niagara Falls to Novelda | 3,956.36 mi (6,367.15 km) |
| Niagara Falls to Noya | 3,437.09 mi (5,531.46 km) |
| Niagara Falls to Nules | 3,931.60 mi (6,327.30 km) |
| Niagara Falls to Ocana | 3,775.20 mi (6,075.59 km) |
| Niagara Falls to Ogijares | 3,870.66 mi (6,229.22 km) |
| Niagara Falls to Oleiros | 3,446.34 mi (5,546.35 km) |
| Niagara Falls to Olesa de Montserrat | 3,962.80 mi (6,377.52 km) |
| Niagara Falls to Oliva | 3,966.60 mi (6,383.63 km) |
