I think there are two separate trails at rock canyon. One that is extremely long on the outskirts of Utah county and one that goes into the canyon and leads to a campground.
Go straight into the canyon!!! That hike was so much fun. There is a place for rock climbing on this trail as well. Lots of fun bridges you go over, great overlook views, beautiful rivers, and the camp ground at the end was fun to explore. Make sure you go all the way to the campground. That's the end of the trail. Loved all the many different aspects this trail had to offer.
Hike to the top or be lame. I did the hike to the top of the peak Wednesday around noon with my dog. I didn't see another should past the Y. The trail is very narrow but easy to follow (except at the very top). There was a bit of mud around the top. I would probably wear real hiking boots next time (I was just wearing Nike sneaks). The one bad thing about having my long haired dog with me was that he was covered in burrs after because the trail is so narrow, but he kept me motivated! Took about 5 hours total with many breaks.