Mount Si Natural Resources Conservation Area
Green Mountain & Lake Hancock
13.6 mi · ▲ 3,562 ft · 6 hr 19 min
Green Mountain & Lake Hancock is a 13.6-mile out-and-back in Mount Si Natural Resources Conservation Area near Ernies Grove, WA. The route passes Lake Hancock before reaching Green Mountain at the turnaround, 6.8 miles in. It climbs 3,562 ft, with sections as steep as 33% grade. It scores 78/100 on the Ambleway Wildness scale: genuinely wild.
Elevation
Getting there
Directions
Green Mountain & Lake Hancock
13.6 mi · ▲ 3,562 ft · 6 hr 19 min
Elevation 2,215–4,828 ft
Out & Back · Mount Si Natural Resources Conservation Area
Trailhead: 47.56825, -121.68346
Weather Aug 3: Clear, high 67°F / low 44° · precip 0% · wind 1 mph · sunrise 5:48 AM · sunset 8:40 PM
- Start at the trailhead, heading W.
- 50 ftPass Lake Hancock.
- 0.8 miBear left, heading S.
- 1.8 miBear left, heading W.
- 0.8 miSharp left, heading W.
- 1 miBear right, heading NE.
- 1 miBear right, heading SE.
- 150 ftTurn right, heading SE.
- 1.3 miTurn left, heading S.
- 350 ftReach Green Mountain, then turn around and head back the way you came.
- 300 ftTurn right, heading NE.
- 1.3 miTurn left, heading NE.
- 150 ftBear left, heading NE.
- 1 miBear left, heading N.
- 1 miSharp right, heading NW.
- 0.8 miBear right, heading NW.
- 1.8 miBear right, heading W.
- 0.8 miArrive back at the trailhead.
Each distance is the walk from the previous step. Tap a step for a map of its junction.
Trail surface
Weather
Sunset
The best sunset spot on this hike is 4.9 mi in (~181 min). Leave by 5:18 PM for the 8:40 PM sunset. Back at your car by 11:03 PM, after dark — bring a headlamp.
Other ways to reach this destination
More from this trailhead
- Far Enough Promontory–Absolute Last Promontory, 3 viewpoints 15.3 mi · ▲ 4,918 ft
Get outside more
A wild hike near Ernies Grove, emailed to you once a week.
Hikes near Ernies Grove, Washington