Stopping points from Washington Dulles International Airport to Montgomery County Airpark:

• Start from Washington Dulles International Airport
• 29 minutes to Potomac, Maryland after driving about 20 miles / 40 km
• 27 minutes to Montgomery County Airpark after driving about 10 miles / 20 km

Your total trip with all stops is around 40 miles / 60 km, taking roughly 56 minutes for the whole trip. If you want to see every small town along the way, you can get a full list of cities between IAD and GAI.

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• Dulles to Gaithersburg drive
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Stopping points from IAD to GAI

Start from Washington Dulles International Airport.

Potomac, Maryland is stopping point #1 after driving about 20 miles (40 km) or 29 minutes.

Finally, Montgomery County Airpark is your destination after driving about 10 miles (20 km) or 27 minutes. Your total trip with all stops is around 40 miles or 60 km, taking roughly 56 minutes for the whole trip.

Stopping point calculator

Travelmath helps you figure out where to stop when planning a long road trip from one location to another. The best stopping point for an overnight hotel stay or a break from driving often depends on how far or how long you want to drive before pausing to rest. You can find the closest city to your stopping point to look for hotels, or explore other cities and towns along the route. Use this as a road trip planner when you're driving cross-country or mapping a route with multiple stops.