Allentown to Merrimack: Road Trip Guide & Distance

How far is Allentown from Merrimack?

The distance from Allentown to Merrimack is 258.4 miles (415.8 km) as the crow flies. Merrimack is located NE of Allentown. By car, the driving distance is approximately 323 miles, taking about 6h 30min. A direct flight would take roughly 1h 1min. Both are located in United States — Allentown in Pennsylvania and Merrimack in New Hampshire.

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.

Coordinates come from public place data for Allentown 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.