Kayaker at the Great Falls Race. January 24, 2019 at 1080 × 721 in C&O Canal National Historical Park, 2018 ← Previous Next → Kayaker training for the annual Great Falls Race. The Potomac River was too high for the race in 2018. It was moved to the first channel between the C&O Canal and Olmsted Island. Here, a kayaker trains the day before the race.