An alternate, less steep route to Mount Si, this trail is really a spur off of the Mount Teneriffe Road Trail.

To get there, follow the Mount Teneriffe Road Trail for 3.2 miles, where the trail branches off to the left. Though not signed, the trail intersection is easy to spot. You can easily judge where to start looking when you see Mount Si off to the left. From there, it's a scant 0.8 miles to the summit, where you emerge at the foot of The Haystack.

There aren't a lot of scenic viewpoints along the old and sometimes rather ugly logging road, with two notable exceptions. The first, with great views of Mt. Rainier, Rattlesnake Ledge, and Mailbox Peak, overlooks an old clear cut at one of the road switchbacks. The second, on the spur trail just before you emerge at the Mt. Si summit, offers a view of The Haystack from the northeast, a view most Mt. Si hikers never see. And, from this same spot, look north along the Puget Sound coastal plain to see Mt. Baker and, on a clear day, all the way to Whistler Mountain in British Columbia.

The Mt. Si trail offers no views at all until you reach the summit, so there are scenic advantages to following this otherwise uninteresting hike. And, as very few hikers choose this hike, it offers much more solitude than the Mt. Si trail.