When is Harvey Manning Trailhead open?
Every day, 6 AM–6 PM.

TrailSpyglass Hill
A quiet, forested trailhead offering access to miles of well-maintained hiking routes and scenic viewpoints. Expect wooded paths, steady elevation changes, abundant wildlife, and peaceful picnic spots — a great place for nature walks, trail running, or a reflective solo outing. Visitors come for fresh air, easy access from Renton, and reliable signage for exploring Cougar Mountain.
Quick answers
Every day, 6 AM–6 PM.
It's at its best mornings and afternoons. Wedar also scores every hour of the next five days against the forecast; see the best time on this page.
Outdoors: best on a dry day.
SE Cougar Mountain Dr,Renton, WA 98059.
Right now · 1:00 pm
A great call right now.
Nearly as good as its best, tomorrow 1 pm.
In its favour
Worth knowing
49°
Mostly clear
The next five days
Scored on the forecast, its opening hours and when it's at its best. Tap a time to see it.
Before you go
From visitors and the venue
4.7from 220 reviews
For the next three hours
Leave with a jacket.