Gaithersburg to New Castle, Pennsylvania: Road Trip Guide & Distance

How far is Gaithersburg from New Castle, Pennsylvania?

The distance from Gaithersburg to New Castle, Pennsylvania is 210.1 miles (338.2 km) as the crow flies. New Castle, Pennsylvania is located NW of Gaithersburg. By car, the driving distance is approximately 262.7 miles, taking about 5h 17min. A direct flight would take roughly 55min. Both are located in United States — Gaithersburg in Maryland and New Castle, Pennsylvania in Pennsylvania.

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. Since you'll be heading mostly West, pack a good pair of sunglasses if you plan to drive during the late afternoon to avoid the harsh sun glare.

Coordinates come from public place data for Gaithersburg and New Castle, Pennsylvania. 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.