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On a hardtail absolutely not but I've ridden many laps on 170 29'r and its real fun, getting to the bottom non stop with roadie arms is solid...it is rough trying to do a full run. At the speed the pros go its probably easier, they seem to skip over the a lot of the rock gardens. For mere mortals its like a series of hectic wee sections with some smooth bits in between after a few laps you can get it kinda smooth. Its class.
The Top Chief trail is something else, incredible piece of trail building. 2.3 miles of rowdiness.
They're popping a blue flow trail in as well.
https://youtu.be/2rnpiAfBsNU