Germantown, Maryland to Portsmouth, Ohio: Road Trip Guide & Distance

How far is Germantown, Maryland from Portsmouth, Ohio?

The distance from Germantown, Maryland to Portsmouth, Ohio is 309.1 miles (497.5 km) as the crow flies. Portsmouth, Ohio is located W of Germantown, Maryland. By car, the driving distance is approximately 386.4 miles, taking about 7h 46min. A direct flight would take roughly 1h 7min. Both are located in United States — Germantown, Maryland in Maryland and Portsmouth, Ohio in Ohio.

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. 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 Germantown, Maryland and Portsmouth, Ohio. 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.