What is the most famous river in the United States for outdoor activities?

The most famous river in the United States for outdoor activities is the Colorado River. Stretching over 1,400 miles, the Colorado River runs through seven states, including Arizona, Utah, and Nevada, and is known for its incredible whitewater rafting opportunities. One of the most popular sections for rafting is the Grand Canyon, where the river cuts through the massive canyon, offering thrilling rapids and spectacular views. The Colorado River is also ideal for kayaking, fishing, and hiking along its banks, making it a favorite for adventure seekers.