Adventure Point Tubing at Keystone Resort has conveyor belts to make walking up the hill easier. Sorry no one under 5 and you have to be over 42" tall. Sorry little guys. Night tubing only open when night skiing is open.
Tubing at Keystone is nothing like any day on a sled hill that I had ever experienced. For $31, tubers have one adrenaline-filled one hour to enjoy the hill. Tubers watch a short instructional video and then grab a tube and get in line to head down the hill. There are four runs, two faster than the others, and riders must have their own tubes but can go down with up to four tubes connected at a time.
My kids are five years old and were on the younger end for this experience considering the minimum height is 42 inches. My daughter and I watched my husband and son go first. Wow! They zipped down that steep hill with so much speed! Though he was a bit surprised by the speed of his ride, my son loved it and was ready to go again. He and my husband carried their tubes over to the long magic carpet escalator and enjoyed the leisurely ride back up the mountain (quite different from the normal lugging and climbing involved in sledding). Next my daughter and I went. I loved it, she hated it. Screaming, crying, let everyone within a hundred miles know that she hated it. She is a timid child and doesn't like roller coasters so it shouldn't have been a big surprise to me. Her response reaffirmed my belief that this kind of tubing is best suited for those who love speed and thrills. The hill is high and fast but very safe and the magic carpet that takes tubers back up the hill is a definite luxury. The price may seem high for one hour of tubing but since riders can go several times in one hour, most people won't need more than that.
Tip: Call ahead to reserve your time as tubing is very popular. Arrive at least 15 minutes prior to your scheduled time and allow about 20 minutes to ride the gondola up (35 minutes total).
Disclosure: My family received a complimentary stay at Keystone which involved tubing in order for me to complete a story and reviews for Trekaroo. All opinions are my own.
If you're vacationing at Keystone in the winter, *do not miss* the tubing hill on Dercum Mountain. It's hilarious. Multiple tubing lanes have half "walls" (almost) to keep you on track -- there's no free for all here. It's all very controlled and organized (and safe), when staff hurl you in your innertube down the steep hill.
For our first run, my son and I each sat in our own tube, but I grabbed onto his handles so we flew down together. He didn't love it; that was his only run and he was happy to warm up inside the yurt with a buddy.
However, my 9-year-old daughter couldn't get enough; she asked to be spun fast down the hill. My husband, too, loved the speed. I thought it was hysterical, but after five runs in the snow and cold, it was plenty for me. The runs I did take, while holding onto my husband's or daughter's tube, were *such* fun. (They went down at least 7 times in about 50 minutes.)
No need to schlep your tube up the hill; a covered magic carpet whisks you up. Disco music and a disco ball add to the festive atmosphere.
For adventurous kids, the experience is well worth the $29/hour fee. In 2009, there was enough snow that the tubing hill was open for part of the summer. Fun stuff!