I was thinking of doing this 30 mile hike over the Columbus Day Weekend. Hopefully, the foliage will start changing by then. This can be done over 3 days and 2 nights or stretched an extra day for a more leisurely pace.

Here are a few links:

http://www.pahikes.com/trails/west-rim-trail

Google map of the area

Pennsylvania's DCNR

Wikipedia's page

Pine Creek Outfitters page

Trip Report

Backpacker magazine's details

Plus there a a bunch of videos on YouTube.