Philadelphia to Washington is about 160 miles (258 km) by road and 123 miles in a straight line. The drive takes around 2 hr 52 min. The distance is the same in reverse, from Washington to Philadelphia.
What This Distance Means for Your Trip
At 160 miles, this is a driving distance rather than a flying one — and a train or bus is often an option too. A scheduled flight would cover only about 123 miles in the air, and once you factor in getting to the airport, checking in and clearing security, that airport time alone cancels out anything saved aloft. For a trip this length, driving is almost always the practical choice.
Want the full side-by-side on time, cost and hassle? See our drive-or-fly breakdown for Philadelphia to Washington.
How we calculate these figures
Straight-line distance uses the great-circle (haversine) formula between each city's centre coordinates. Road distance applies a circuity factor of roughly 1.2–1.4× to reflect that roads are not straight. Driving time assumes typical blended speeds for a trip of this length, and flight time is the great-circle distance at about 875 km/h cruise plus around 30 minutes for taxi, climb, descent and approach. The door-to-door air estimate adds about three hours for airport access, check-in, security and boarding. Real figures vary with your exact route, traffic, weather, aircraft and connections.
Philadelphia to Washington D.C. is a short, well-connected hop on the Northeast Corridor — about 140 miles by road, or a 90-minute Amtrak ride. The two cities are natural partners for a multi-day trip.
The drive goes via I-95 through Delaware and Maryland, passing Wilmington and Baltimore. Both make worthwhile stops, particularly Baltimore's Inner Harbor.
Stops Along the Way
Delaware's largest city with some excellent museums, just 30 minutes south of Philadelphia on I-95.
The Inner Harbor, outstanding crab houses, Fells Point, and the USS Constellation — a great stop 45 minutes north of D.C.
Meeting someone from Washington? Find the exact halfway point between Philadelphia and Washington so neither of you drives the whole way — or plan evenly-spaced rest and fuel stops along the route.
Tips for This Trip
Amtrak is excellent on this route
The Northeast Regional train takes about 90 minutes from 30th Street Station to Union Station — comfortable, frequent, and cheaper than a car once parking is factored in.
Baltimore is worth slowing down for
If you have flexibility, Baltimore deserves more than a drive-through — the Inner Harbor and Fells Point are genuinely enjoyable stops.
Budget for Delaware and Maryland tolls
The Delaware Memorial Bridge and I-95 through Maryland have tolls. E-ZPass speeds things up considerably.
🏨 Hotels in Washington
Compare 2M+ properties on Booking.com — free cancellation on most stays. Filter by price, neighborhood, and traveler ratings.
Search Hotels in Washington →Affiliate link — we may earn a small commission at no extra cost to you.
Frequently Asked Questions
Washington D.C. is about 125 miles (200 km) from Philadelphia in a straight line, and roughly 140 miles (225 km) by road via I-95 through Delaware and Maryland.