Lee Valley Whitewater Center, England
Built to host the kayaking and canoe slalom events for the 2012 London Olympics, the Lee Valley Whitewater Center was open to the public soon after the Games ended. Recreational rafters and kayakers are the primary users today, and there are also opportunities for other types of whitewater sports, including hydrospeeding. The main course is nearly 1,000 feet long, and there is also a shorter but still challenging loop course.
Less than an hour from London in Hertfordshire, Lee Valley is a convenient day trip and is one of the few former Olympic courses that now focuses mainly on serving the public.