Stillaguamish Peak is a 5,720+ ft (1,740+ m) mountain summit near the western edge of the North Cascades, in Snohomish County of Washington state. It is located five miles north-northwest of Barlow Pass near the Monte Cristo area, and is situated on land administered by the Mount Baker-Snoqualmie National Forest. It rises 4,000 feet (1,200 m) above the Stillaguamish River and the Mountain Loop Highway.