| Houston to Grottaferrata | 5,700.63 mi (9,174.27 km) |
| Houston to Grottaglie | 5,952.97 mi (9,580.39 km) |
| Houston to Grottammare | 5,704.77 mi (9,180.95 km) |
| Houston to Grugliasco | 5,364.02 mi (8,632.56 km) |
| Houston to Grumo Appula | 5,902.27 mi (9,498.78 km) |
| Houston to Grumo Nevano | 5,802.24 mi (9,337.80 km) |
| Houston to Gualdo Tadino | 5,650.07 mi (9,092.92 km) |
| Houston to Guardiagrele | 5,750.35 mi (9,254.29 km) |
| Houston to Guastalla | 5,498.77 mi (8,849.41 km) |
| Houston to Gubbio | 5,636.54 mi (9,071.14 km) |
| Houston to Guspini | 5,606.23 mi (9,022.35 km) |
| Houston to Gussago | 5,452.54 mi (8,775.01 km) |
| Houston to Iesi | 5,657.99 mi (9,105.66 km) |
| Houston to Iesolo | 5,556.93 mi (8,943.02 km) |
| Houston to Iglesias | 5,609.50 mi (9,027.62 km) |
