WHITEWATER RAFTING ADVENTURES As the first exclusively non-motorized outfitter authorized by the National Park Service to run rafting trips in the Grand Canyon, OARS helped pioneer whitewater rafting in the Western U.S. And since we first got started in 1969, we have guided more than 500,000 guests on rivers all over the world. Now, with more than 75 unique rafting itineraries, we offer travelers more whitewater rafting trips than any other outfitter on the planet. But it’s not just about how long we’ve been in business, or the number of trips we offer. It’s really about the experience.