Zion Canyon Shuttle loop stops at eight locations in the park. You may get on and off as many times as you like. Free.
We hopped on the Zion Canyon shuttle bus expecting to take the whole tour, but didn't realize it was 80 minutes round-trip, and after about 15 minutes, our toddler was too restless to continue. It would've been great without him, the views are incredible up the canyon, and there is running commentary playing about the history, geology, and other facts. We ended up getting off and doing some hikes, then heading home. The shuttle bus is SO nice for getting around though, we used it during our entire stay. You have to use it to get to most of the popular hikes.
The Zion shuttle is the only way to reach most of the destinations inside Zion canyon during the regular season. From April to the end of October, cars are not allowed into the canyon past Canyon Junction and all visitors must ride the shuttle.
We enjoy riding shuttles as we are very familiar with the Yosemite Shuttle. The Zion shuttle gave great pre-recorded information on Zion as we passed points of interest, but on the way out of the canyon, there is no pre-recorded information. Despite the many windows and sun roofs, I still felt trapped inside and couldn't see as well as I would have liked to.
TIPS:
*Plan ahead and bring backpacks! Because the shuttle is the only way in and out of the park destinations, we had to seriously plan ahead for everything we needed during the day. This meant carrying water bottles, lunches, changes of clothes, sunscreen, and anything else a family needs. The round trip is 80 minutes, so there is no "easy going back" to get things.
*Strollers are permitted onto the shuttle but must be folded up to get on. Because the shuttles can get full quickly, bring a small stroller if you need it.
*Consider parking your car at Canyon Junction so that you are closer to things you need during the day.
*The Zion Lodge is located in the canyon and has restaurant facilities and other needs.
The great thing that we found at Zion National Park, is the shuttle bus. When we went, our little guy was 10 months old. The hikes themselves are mostly pretty far up the canyon from the parking lot. The shuttle provides transportation for those of us who do not feel up to hiking to the trail head. We also found that it was a perfect way to be able to time things well with the baby. We would leave on the shuttle and accommodate for the 20-30 minute trip, go on the hike, and get back on the shuttle in time for nap or bed time. Our child, like all children, is not always on his best behavior. Neither the bus drivers or the other passengers were flustered or put out when he would have a mini-melt down on the trip. This shuttle also has an audio track that points out spots of interest along the drive, so there is something to keep the riders occupied.
Once you pay the $25 park entrance fee and drive into the park, you will park your car in the parking lot and hop on the shuttle. In fact, the only way that you can drive your own car through the park is if you are driving straight through without doing any stopping (at least this is how it was the last time we visited). There is not an additional fee to ride the shuttle, it is included in the $25 entrance fee. Riding the shuttle is definitely the best way to view the park. The shuttles are comfortable and you are able to sight-see without dealing with other cars. You can hop on and off the shuttle at the different stops as you please, as there are many shuttles coming and going all day long.