Sarnia to Washington DC: Road Trip Guide & Distance

How far is Sarnia from Washington DC?

The distance from Sarnia to Washington DC is 396.8 miles (638.6 km) as the crow flies. Washington DC is located SE of Sarnia. By car, the driving distance is approximately 476.2 miles, taking about 9h 35min. A direct flight would take roughly 1h 18min. Sarnia is in Ontario, Canada, while Washington DC is in District of Columbia, 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 Sarnia and Washington DC. 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.