| Gaithersburg to Indianola (Iowa) | 874.59 mi (1,407.52 km) |
| Gaithersburg to Indio (California) | 2,183.89 mi (3,514.62 km) |
| Gaithersburg to Inglewood (California) | 2,291.22 mi (3,687.36 km) |
| Gaithersburg to Inkster (Michigan) | 386.82 mi (622.52 km) |
| Gaithersburg to Inver Grove Heights (Minnesota) | 901.81 mi (1,451.33 km) |
| Gaithersburg to Inwood (New York) | 210.37 mi (338.56 km) |
| Gaithersburg to Iona (Florida) | 914.00 mi (1,470.94 km) |
| Gaithersburg to Ionia (Michigan) | 487.71 mi (784.89 km) |
| Gaithersburg to Iowa City (Iowa) | 772.27 mi (1,242.85 km) |
| Gaithersburg to Irmo (South Carolina) | 411.83 mi (662.78 km) |
| Gaithersburg to Irondale (Alabama) | 651.84 mi (1,049.03 km) |
| Gaithersburg to Ironton (Ohio) | 297.01 mi (477.99 km) |
| Gaithersburg to Irvine (California) | 2,267.72 mi (3,649.54 km) |
| Gaithersburg to Irving (Texas) | 1,183.41 mi (1,904.51 km) |
| Gaithersburg to Isabela (Puerto Rico) | 1,550.91 mi (2,495.94 km) |
