| Potomac to Grottaferrata | 4,498.79 mi (7,240.10 km) |
| Potomac to Grottaglie | 4,754.28 mi (7,651.27 km) |
| Potomac to Grottammare | 4,508.04 mi (7,254.99 km) |
| Potomac to Grugliasco | 4,165.39 mi (6,703.55 km) |
| Potomac to Grumo Appula | 4,703.84 mi (7,570.10 km) |
| Potomac to Grumo Nevano | 4,600.19 mi (7,403.30 km) |
| Potomac to Gualdo Tadino | 4,452.54 mi (7,165.67 km) |
| Potomac to Guardiagrele | 4,551.72 mi (7,325.29 km) |
| Potomac to Guastalla | 4,303.72 mi (6,926.16 km) |
| Potomac to Gubbio | 4,439.06 mi (7,143.98 km) |
| Potomac to Guspini | 4,395.81 mi (7,074.37 km) |
| Potomac to Gussago | 4,259.15 mi (6,854.43 km) |
| Potomac to Iesi | 4,462.04 mi (7,180.95 km) |
| Potomac to Iesolo | 4,367.12 mi (7,028.20 km) |
| Potomac to Iglesias | 4,398.71 mi (7,079.04 km) |
