• Gaithersburg and Dulles midpoint

Map of halfway point

View a map with driving directions using your preferred map provider: Google Maps, Bing Maps, or MapQuest.

More trip calculations

• Hotels near Potomac, Maryland
• Driving Distance
• Driving Time
• Cost Of Driving
• Places To Stop
• Distance
• Flight Time
• Time Difference

Halfway between GAI and IAD

The best city between GAI and IAD to meet is Potomac, Maryland which is about 3 miles from the exact midpoint.

The town that marks the exact halfway point is actually Cabin John Park, Maryland.

The closest zip code to the midpoint is 20817.

The exact latitude and longitude coordinates are 38° 58' 54" N and 77° 10' 19" W.

The total driving distance from GAI to IAD is 35 miles or 56 kilometers.

Each person would then have to drive about 18 miles to meet in the middle.

It will take about 24 minutes for each driver to arrive at the meeting point.

---

For a flight, the straight line geographic midpoint coordinates are 39° 3' 36" N and 77° 18' 26" W.

The city at the geographic halfway point from GAI to IAD is Riverwood, Maryland.

Halfway point calculator

Travelmath helps you figure out the midpoint between two locations based on the driving directions from each starting point. You can find the closest town that is an equal distance from two cities. Use this tool to determine the best city to meet, or to look for interesting stops along the way if you're planning a long road trip and you need to take a break or stay overnight. Search for hotels at the midpoint city to split up your drive, or explore other nearby cities and discover local towns on your trip. If you're meeting a friend halfway in-between, you can figure out how far each person has to drive and how long it will take to arrive at the center. Even if you're separated by water, you can still calculate the straight line geographic midpoint to determine the closest flight distance.