| Niagara Falls to Grottaferrata | 4,418.19 mi (7,110.39 km) |
| Niagara Falls to Grottaglie | 4,668.19 mi (7,512.73 km) |
| Niagara Falls to Grottammare | 4,419.25 mi (7,112.09 km) |
| Niagara Falls to Grugliasco | 4,079.88 mi (6,565.94 km) |
| Niagara Falls to Grumo Appula | 4,617.39 mi (7,430.97 km) |
| Niagara Falls to Grumo Nevano | 4,519.83 mi (7,273.96 km) |
| Niagara Falls to Gualdo Tadino | 4,365.00 mi (7,024.79 km) |
| Niagara Falls to Guardiagrele | 4,465.74 mi (7,186.91 km) |
| Niagara Falls to Guastalla | 4,212.70 mi (6,779.69 km) |
| Niagara Falls to Gubbio | 4,351.45 mi (7,002.98 km) |
| Niagara Falls to Guspini | 4,335.17 mi (6,976.78 km) |
| Niagara Falls to Gussago | 4,165.88 mi (6,704.33 km) |
| Niagara Falls to Iesi | 4,372.16 mi (7,036.31 km) |
| Niagara Falls to Iesolo | 4,269.13 mi (6,870.51 km) |
| Niagara Falls to Iglesias | 4,339.35 mi (6,983.50 km) |
