There's tubing and then there's tubing. The former usually takes place on a hill in park near your house. The latter takes place on a monstrous groomed area on the side of a mountain.
Soldier Hollow is a recreationarea best known for golf during summer and cross country skiing during winter, but also offers the best tubing we have ever experienced. There is a rope tow that attaches to your tube to pull you up the hill so you don't have to wear yourself out. Once at the top, there is a small line, but it moves quickly. They created 4 1200 foot long groomed lanes with several large bumps along the way down. It's about a 45 second ride, so quite a bit longer than the neighborhood park.
Another benefit is you get up in the mountains and out of the inversion. The view is beautiful and makes us wish we lived up there. You have to purchase tickets and they only allow so may people at a time, so it's a good idea to buy them online well in advance.
Activity rating 0-10
Kid fun: 10
Difficulty: 2
Cost: $22/person 7 yrs+, $12/person 3-6 yrs
Difficulty: 2
Cost: $22/person 7 yrs+, $12/person 3-6 yrs