There is a lot. Do some research in the
Trip Reports section and see where people have gone before. Check out
Expedition Utah for a lot of great trail info too. And I would highly recommend picking up some maps and atlases like the
Benchmark Atlas of Utah and a book like
4WD Adventures Utah.
If you want to head out by Delta, you can do a nice loop on the Wyss Highway to Topaz and then out to the Deep Creek Mountains, then back to Lehi via the Pony Express trail. Not a technically challenging trip, but a nice, interesting one. You can easily do the whole trip in two days.
Most importantly, do your research before you go. Make sure you know where you are going and that you are prepared for the trip in every way. From the vehicle, to food, to clothing and communication.