Chatham, Ontario, Canada to Gaithersburg: Road Trip Guide & Distance

How far is Chatham, Ontario, Canada from Gaithersburg?

The distance from Chatham, Ontario, Canada to Gaithersburg is 344.9 miles (555 km) as the crow flies. Gaithersburg is located SE of Chatham, Ontario, Canada. By car, the driving distance is approximately 413.8 miles, taking about 8h 19min. A direct flight would take roughly 1h 12min. Chatham, Ontario, Canada is in Ontario, Canada, while Gaithersburg is in Maryland, United States.

This is a solid day of driving. Be sure to take breaks every 2-3 hours to avoid driver fatigue, and plan your meals ahead of time. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility. Keep in mind this route crosses international borders. Don't forget your passport, and check current border crossing times and vehicle insurance requirements.

Coordinates come from public place data for Chatham, Ontario, Canada and Gaithersburg. The driving distance is estimated from straight-line distance with a road-factor model, so confirm the route in your navigation app. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.