White Water Rafting in Colorado is second to none.  We have been doing it as a family since the kids were old enough to hold on.  There are many rafting companies in Colorado that offer an easy ride to a rush down class 5 rapids for adrenaline junkies.  Make sure you do your homework and choose a reputable company with good reviews and many years of business.  Our favorite place to go white water rafing in Colorado is the Royal Gorge.  It can change week to week depending on the water level, but offers some of the best class 5 rapids in Colorado.