Cornwall to Merrimack: Road Trip Guide & Distance

How far is Cornwall from Merrimack?

The distance from Cornwall to Merrimack is 219.1 miles (352.6 km) as the crow flies. Merrimack is located SE of Cornwall. By car, the driving distance is approximately 273.9 miles, taking about 5h 31min. A direct flight would take roughly 56min. Cornwall is in Ontario, Canada, while Merrimack is in New Hampshire, United States.

For a drive of this length, it's recommended to plan at least one quick rest stop to stretch your legs and grab a coffee. 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 Cornwall and Merrimack. 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.