Originally Posted by corsair23
IIMO Porcupine Rim was the tougher of the trails mainly due to the "pucker factor" in spots running along the rim on uneven, off camber, sections.
I don't think you'd get much agreement on that assessment. Was Porcupine the first trail you'd ever run in Moab? You always remember that first trail being harder than it actually is. I bet if you ran it again, you'd do it with far less pucker.
You also remember the trails when you "step up" to another level. I didn't find Moab Rim to be as hard as its reputation, but Behind The Rocks gave me some serious puckerage indeed!