I accomplished the entire Pinchot Trail in one big loop on 8/5/17 in a time of 3:47:01. The distance was less than the originally stated 26 miles. Upon arriving at the trailhead, DCNR had posted it was 23 miles. My GPS data seems to confirm this clocking in at 21.65 (expected variation due to running where I am covered by trees).
I wrote a small blog about if should you wish to read it.
Or if you want the GPS track:
Someone should be able to trim this down. Hopefully, this inspires a few other folks to tackle this loop.