Also known as Squaw Peak, this trail is very popular due to it's location -- close enough to the West and East side of the city.
Here's the deal Camelback is tougher than this one, but definitely worth the run. If you want a better workout then I suggest to running and hiking the circumference of Trail 302/1A all the way around the mountain and then work your way up to the peak. This will kick your butt and I would only recommend this to hard core trail runners and hikers. It should take at least 2 to 2.5 hours to complete for you speedsters.
If you're just planning to do the Piestewa Peak hike then I would time 1-2 hours for amateurs and about 1 hour for advance peeps. - Enjoy!