Another thread in Straight Forward asks what's the toughest trails in the Southeast. Some of those in the forum sound pretty hairy - but also fun most likely. My experience on mountain scrambling/hiking is Long's Peak and others in the Rockies and also Katahdin from Baxter S.P. Some places on Katahdin were definitely quad-burners and a relentless march up up up.
So, help me with a reference point on how "hard" some of those in the Toughest Trails list are as compared to the hike up Katahdin (whether it be elevation gain, bouldering, or just exhausting)