Hike to mirror lake is 4+ miles round trip. Trail head is changed now. Half the trail is pretty new. Trail is very pretty, though the woods. Keeps climbing on the way to the lake. Effort is really worth it. Lake is really pretty. you can see the reflection of Mt Hood and trees around the lake. There is a camp site as well next to the lake. I saw couple of folks doing fly fishing. Don't miss it if you are visting Mt Hood and have enough time.