Yes and no. This past Sunday, you could barely find a parking spot and even the upper parking lot was packed. Even still, out on the trail, we never had to pass or let pass another rider or group of riders (well, other than on the fireroad climbs and that was mostly me getting passed). There were plenty of people at the usual stopping points, but there's enough trail out there that everyone gets pretty spread out. I think once every five trips or so I may actually have to pass or let someone by on a single-track section. That just adds to the awesomeness of the place.
All that being said, it's not a place for beginners. The short loop is 10miles with almost 2000' of climbing. I've never done it, but I've heard of people riding every trail there in a day putting in 35+ miles and 4000'+ of climbing. And while the new flow trail is nice and smooth and relatively tame, the other trails are much, much more difficult and it's very remote. I've seen lots of riders trail-side with significant injuries. And unless you're lucky, it's hours before you'll get any professional medical attention.
