Dave B from South Florida on 10/7/2017 8:43:02 AM:
We just completed a round-trip from DC to Pittsburgh to DC in 12 days, fully loaded camping. Going over the bypass DC to Pitt made us look for a road route for the return trip. We were advised very strongly NOT to take the roads. As it turned out, going from Pitt to DC the push over was much easier. I had 52lbs plus on my bike and did it in 31 minutes. I rested and relaxed during the bypass. My friend could have made it in 20 mins but waited for me.
It is a serious push but managable if you take your time, rest often and enjoy the adventure.
DC to Pitt push is very steep and I would pick a tree 10 yards up ahead, rest and do it again until I made it to the top. I didn't time that direction but probably an hour of heart pounding pushing. The trailhead sign even says it is a strenous hike for hikers!
All that said, don't be afraid and I don't recommend the shuttle service unless you have a physical issue. Just do it slowly, one chunk at a time and enjoy your adventure!