| Niagara Falls to Granada | 3,868.40 mi (6,225.59 km) |
| Niagara Falls to Granadilla de Abona | 3,570.78 mi (5,746.62 km) |
| Niagara Falls to Granollers | 3,977.99 mi (6,401.96 km) |
| Niagara Falls to Grinon | 3,750.08 mi (6,035.17 km) |
| Niagara Falls to Guadalajara | 3,767.07 mi (6,062.51 km) |
| Niagara Falls to Guadarrama | 3,723.66 mi (5,992.65 km) |
| Niagara Falls to Guadix | 3,885.91 mi (6,253.77 km) |
| Niagara Falls to Guardamar del Segura | 3,972.35 mi (6,392.87 km) |
| Niagara Falls to Guernica y Luno | 3,700.15 mi (5,954.81 km) |
| Niagara Falls to Guia de Isora | 3,557.30 mi (5,724.92 km) |
| Niagara Falls to Guillena | 3,740.47 mi (6,019.71 km) |
| Niagara Falls to Guimar | 3,571.77 mi (5,748.20 km) |
| Niagara Falls to Hellin | 3,909.41 mi (6,291.58 km) |
| Niagara Falls to Herencia | 3,802.16 mi (6,118.99 km) |
| Niagara Falls to Hernani | 3,732.79 mi (6,007.34 km) |
