Not even 1/2 mile. You might want to make sure you start on the Norco side of the hill, as you could find yourself hiking several miles and might not even find it as I first had done.
There are 2 entrances: Trailhead #1. Two miles? It will take 45 mins. Not too steep, great views, not too slippery. Trailhead #2. Much shorter but much steeper and much more slippery. Don't wear flat bottomed sneakers.
From the bottom of the hill to the actual rock is prob less than 1 but the trails go on if you want to keep hiking
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