The Whitewater River Run in Utah spans 10 miles downstream from the southern boundary of the park and is rated as a Class II to Class III rapid. The ideal streamflow range for this run is between 300-900 cfs, but can reach up to 1,500 cfs during peak season. This run is broken down into two segments, with the first segment spanning 6 miles and containing several Class II rapids such as Schoolhouse, Castle Creek, and Rock Garden. The second segment is made up of four miles and contains more challenging Class III rapids such as Three Falls and S-Turn.

The area is regulated by the National Park Service, and all visitors are required to obtain a permit before embarking on the river run. Additionally, visitors are required to follow Leave No Trace principles and are not allowed to camp or build fires along the riverbank. It is also required that all visitors wear a personal flotation device while on the river.

Overall, the Whitewater River Run offers a thrilling experience for whitewater enthusiasts with its challenging rapids and scenic views. However, it is important to note that this run can be dangerous and should only be attempted by experienced paddlers in appropriate equipment and conditions.