Directions: Head East on Mueller Park Road (E 1800 S) in
Bountiful until you hit the trail-head. You can't miss it.
Trail Information: The trail starts at the end of a bridge connected to the parking lot. It's about 3 or more miles to Elephant Rock, then another 3 or more miles to Rudy's Flat. The total elevation gain is somewhere between 1500 to 2000 feet, I believe. The trail is well used and in very good condition. In fact, it's used enough in winter that with a good pair of running spikes, you can get to E-rock and back without running into difficulty with unpacked snow. The trail is fairly wide and flowing in most places, only becoming quite narrow in a few places. Beautiful views and/or scenery are to be had the whole way, especially in the Fall. There are a few short sections of challenging hill climbing, but for the most part, the grade is easy on the runner/jogger that paces themselves.
Miscellaneous Information: Parking is severely limited, but free as long as you don't cross the gate into the campground areas. You can also park away from the trail-head on the street and then walk in.
The trail is motorized, but motorcycles can often be avoided by going early in the morning on week-days. Week-ends in the summer are times when motorized and non-motorized trail user groups collide worst, as well as when the trail sees the most traffic of any kind. The motorized users do not yield to anyone and they don't slow down, not even for the blind corners. Keep an ear out and a sharp eye. Be ready to fling yourself off the trail at a moment's notice to avoid a head-on collision with an exhaust-fume expelling machine.
Horses are aloud on the trail too. Always yield to equestrians. Don't step in horse poop.
Mountain lions have been reported to be seen on the trail, but they are quite rare. (I have not yet seen one.) Black bears and moose are also a concern. If you see an animal, it will most likely be one or more spooked deer.
Dogs are aloud and there is no leash ordinance. Most abandoned bags of pooh will be scene only in the first few miles of the trail.
Most of the mountain bikers I've run into are kind to yield when necessary. It's often best to yield to them as a trail runner can usually run in place off to the side so that everyone can keep their heart-rate up.