Discover 250 years of flight in a guided, bicycle tour along the Anacostia River Trail, from the first balloon flight in America to intriguing 20th-century inventions and industry. The ride will be a flat, 10-mile ride. Advance registration is required. If you would like to participate, but do not have access to a bike, please call a week in advance to reserve a bike. For Ages 13+ (Ages 17 & under must be accompanied by an adult.)