About 3 and a half hours depending on where you're coming from.
No idea haha I was coming from the other direction. Its about 2hrs from the lehigh valley. You can use Google maps and see the exact distance for yourself tho! You have to park at Koser Park so GPS to there and not to the cliffs themselves. The road going right up to them is private so you need to walk about a mile and a half on the trail to get to the cliffs. Its a nice wide paved flat walk tho!
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