The Mount Baker Ultra Marathon is a 50 mile out and back foot race from the town of Concrete Washington to Mount Baker's Sherman peak at 10,160ft (3,097m). The race draws it's inspiration from the century old Mount Baker Marathon that lasted for three years from 1911-1913. From down town Concrete the course will follow Forest Service roads with a water crossing at Thunder Creek, then will pass over the Upper Baker Dam. After 23 miles competitors will ascend the Squak glacier traversing a series of fixed ropes for 1.75 miles. The weather and snow conditions can be extremely varied, even in June. This should not be a participant's first time in severe mountainous conditions.