The Whitewater River Run from Headwaters to Costilla Creek in New Mexico is a popular destination for kayakers and rafters alike. The ideal streamflow range for this section of the river is between 150 and 500 cubic feet per second (cfs). The river is rated as a Class III to IV, suitable for intermediate to advanced paddlers. The segment mileage from Headwaters to Costilla Creek is approximately 10 miles.

One of the most notable rapids on this section of the river is the "Box," which is a narrow and technical rapid that requires precise maneuvering. Other rapids include "Slaughterhouse," "Elephant Butte," and "Toilet Bowl." There are also a few small waterfalls and rock gardens that add to the excitement of the run.

There are specific regulations that apply to the Whitewater River Run. All boaters must have a valid New Mexico boater registration or permit, and all vessels must be equipped with a personal flotation device (PFD) for each person on board. Additionally, there are restrictions on the use of alcohol and drugs while on the river.

In summary, the Whitewater River Run from Headwaters to Costilla Creek is a challenging and thrilling journey for experienced paddlers. With a range of rapids and obstacles, this section of the river is sure to provide an exciting adventure for those who dare to take it on. It is important to adhere to the specific regulations and safety guidelines to ensure a safe and enjoyable experience on the water.