| South Houston to Grottaferrata | 5,699.79 mi (9,172.93 km) |
| South Houston to Grottaglie | 5,952.37 mi (9,579.42 km) |
| South Houston to Grottammare | 5,704.27 mi (9,180.14 km) |
| South Houston to Grugliasco | 5,363.38 mi (8,631.52 km) |
| South Houston to Grumo Appula | 5,901.68 mi (9,497.83 km) |
| South Houston to Grumo Nevano | 5,801.40 mi (9,336.44 km) |
| South Houston to Gualdo Tadino | 5,649.52 mi (9,092.03 km) |
| South Houston to Guardiagrele | 5,749.73 mi (9,253.30 km) |
| South Houston to Guastalla | 5,498.35 mi (8,848.74 km) |
| South Houston to Gubbio | 5,635.99 mi (9,070.25 km) |
| South Houston to Guspini | 5,604.59 mi (9,019.71 km) |
| South Houston to Gussago | 5,452.21 mi (8,774.49 km) |
| South Houston to Iesi | 5,657.54 mi (9,104.93 km) |
| South Houston to Iesolo | 5,556.80 mi (8,942.81 km) |
| South Houston to Iglesias | 5,607.81 mi (9,024.90 km) |
