| Clayton to Grottaferrata | 1,062.98 mi (1,710.70 km) |
| Clayton to Grottaglie | 1,278.71 mi (2,057.89 km) |
| Clayton to Grottammare | 1,031.74 mi (1,660.42 km) |
| Clayton to Grugliasco | 733.92 mi (1,181.14 km) |
| Clayton to Grumo Appula | 1,228.79 mi (1,977.55 km) |
| Clayton to Grumo Nevano | 1,158.35 mi (1,864.18 km) |
| Clayton to Gualdo Tadino | 984.99 mi (1,585.20 km) |
| Clayton to Guardiagrele | 1,085.84 mi (1,747.48 km) |
| Clayton to Guastalla | 828.76 mi (1,333.75 km) |
| Clayton to Gubbio | 971.99 mi (1,564.26 km) |
| Clayton to Guspini | 1,099.43 mi (1,769.36 km) |
| Clayton to Gussago | 776.15 mi (1,249.09 km) |
| Clayton to Iesi | 983.24 mi (1,582.37 km) |
| Clayton to Iesolo | 859.08 mi (1,382.56 km) |
| Clayton to Iglesias | 1,111.17 mi (1,788.25 km) |
