The hike to the summit of Mt. Si is one of the most popular hikes in the Puget Sound area. Starting at an elevation of 500 feet, the 4-mile trail rises to an elevation of 4,167 feet. The view from the top is spectacular, even on a rainy overcast day. When the skies are clear you can see the Seattle skyline to the west, Mr. Rainier to the south and Mt. Baker to the north.