Pa is quite big. It depends if you start in Erie (around 3 hours) or Philadelphia (around 10 hours?)...
Niagara falls is in NY.
It Is a 38 Hour Drive
about 350 miles
7 hours
400 miles is the distance from Philadephia to Niagara Falls. It takes about 7 hours to drive.
it takes close to 9 hours.
8 and 1/2 hours
It would take you 28 hours
About 535 miles and can be covered in about 8.5 hours.
The drive is 365.6 miles and it will take 6 hours and 27 minutes to get there
It is 85.2 miles according to Google Maps.
about seven hours 24 minutes