Olallie Mountain is a low trafficked trail in the Three Sisters Wilderness leading through sub-alpine meadows up to the site of an old, now burned down, fire lookout. The summit offers amazing views of the Cascade Mountains.
The trail starts at the far end of a large parking loop. There are two trailheads here so make sure you are taking the trail at the far left of the parking area. The hike begins with a slight but steady incline through thick green forest.
After 0.5 miles you come across a creek called Mosquito Creek. If you are into some serious bush whacking, you can follow the creek upstream to Wolverine Lake, but the thick brush and swarms of mosquitoes makes it look pretty unappealing. After crossing Mosquito Creek, you will hike another 1.6 miles until you come to a trail junction.