Beautiful trail! Get your driving directions from their website, not Google maps...I learned that the hard way!
The hike is about 4.2 miles round trip. It took us about 2.5 hours but we spent lots of time at the top taking pictures and wandering around up there.
I did see a lot of people falling on the trail though, there's lots of loose dirt and gravel so wear shoes that have a good grip on them!