I'm assuming you mean the one in Pennsylvania. There are at least three others. It's about 330 miles.
The distance from Philadelphia, Pennsylvania, to Portsmouth, Ohio, is 428 air miles. That equals 689 kilometers or 372 nautical miles.
The distance from Wilmington, Ohio, to Philadelphia, Pennsylvania, is 463 air miles. That equals 745 kilometers or 402 nautical miles.
About 30 miles.
It is 456 miles.
You can make the border in about 560 miles.
Pennsylvania and Ohio share a border, so it is possible for a car to be in both states at once. Pittsburgh to Akron is 110 miles, Philadelphia to Cincinnati is 573 miles.
About 53 miles from the Ohio state line to the Canadian border by road.
The distance is 92.6 road miles using US-22 West.
501 driving miles distance to central Washington, DC according to Google Maps. The distance to the border of the District of Columbia is 496 miles driving distance.
The exact halfway driving distance point between Philadelphia, Pennsylvania, and Chicago, Illinois, is Braceville, Ohio. The driving distance between Philadelphia and Chicago is 759 miles or 1,221 kilometers.
The distance from downtown Cincinnati, Ohio to downtown Dayton, Ohio is 54 miles. The distance between downtown Cincinnati, Ohio and "downtown" Dayton, Kentucky is about 3 miles. (Dayton, KY and Cincinnati, OH share a border on the Ohio River.
Ohio does not directly border the Atlantic Ocean. The distance between the eastern coast of Ohio and the Atlantic Ocean would vary depending on the specific location in Ohio, but it is typically around 500-600 miles to reach the coast.