Grassy Knoll Trail
Strenuous · Out-and-back · 12 mi round trip · 2,116 ft gain · 4 h 30 min–6 h 30 min
Parking: not reported today
A long, demanding day; experienced hikers in good shape. No bikes.
6 mi one way · high point 3,985 ft · time at a steady pace without breaks
Elevation from USGS; 2,427–3,985 ft. Open the map.
No hiker reports in the last 3 days. Be the first to report here
What you need
No bikes dogs, accessibility: not recorded yet
Toilets and trash not confirmed here. Pack out what you pack in.
Forest Service page for this site › Forest Service record for Trailhead: Grassy Knoll (2026-10-06); restrictions: Closed to All Motorized Use. Bicycle use prohibited.
In Mount St. Helens and the Gifford Pinchot National Forest. Parking pass Northwest Forest Pass, $5 per day or $30 per year or an America the Beautiful pass. Day hikes need no permit; overnight stays need a wilderness permit. Rules, passes and closures change. Check the official Forest Service site before you go. Official: conditions · roads · fees · permits.
Getting there
Starts at Grassy Knoll Trailhead · Columbia Gorge
Navigate to the trailhead: Google Maps · Apple Maps · coordinates 45.79766, -121.74141
Right now
Weather and road conditions
- Today: Sunny, 73°F, wind 7 mph
- Tonight: Mostly Clear, 52°F, wind 5 mph
- Wednesday: Sunny, 74°F, wind 3 to 7 mph
Daylight: Sunset 6:38 pm · 5 h 45 min of daylight left
Air: Good (AQI 33, PM2.5 5.9 µg/m³) at the Vancouver-NE 84th Ave monitor, 68 km away AirNow
Wildfire: High Lava fire, 30 km away, 2,899 acres, 90% contained InciWeb
Snow: 0″ snow at Greenpoint (3,320 ft, 19.7 km away) station
Typical year: normally snow-free now · usually melted out by about May 3 · typical peak Mar 10
No reports in the last 3 days.
All conditions and reports at Grassy Knoll Trailhead
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