Teton Dam Marathon

The Teton Dam Marathon is held annually in Rexburg, Idaho, typically on the first Saturday of June to coincide with the anniversary of the Teton Dam collapse of 1976. The marathon course starts at the Teton Dam Site in Teton, Idaho, at an elevation of approximately 5,380 feet. The initial segment of the race, consisting of the first 15 miles, is a gentle downhill with an elevation drop of around 500 feet. This is followed by a 3-mile uphill stretch, regaining 360 feet of elevation up to 5,240 fe